| Marc Giacalone | IF | 2015-2018 | Saint Joseph's |
| Joe Giacchino | OF | 2012-2015 | Delaware |
| Anthony Giachin | IF | 2018-2019 | Army |
| Mark Giallanzo | P | 2017-2018 | St. Bonaventure, SUNY-Brockport |
| Andrew Giambrone | OF | 2006-2006 | Kansas State, Barton County CC |
| Ian Giammanco | P | 2001-2002 | Louisiana-Monroe |
| David Giammaresi | 1B | 2005-2008 | Liberty |
| Carmen Giampetruzzi | P | 2015-2018 | Boston College |
| Phil Gianakos | P | 2011-2014 | Temple |
| Nick Gianforte | 1B-C | 2012-2012 | Georgetown |
| Pete Giangrosso | C | 2001-2003 | Alabama-Birmingham |
| Jack Giannini | IF | 2011-2014 | Fairfield |
| Matt Giannini | P | 2006-2008 | Rutgers |
| Tony Giannini | IF-C | 2015-2018 | Ohio |
| Rick Giannola | P | 1994-1997 | Vanderbilt |
| Robert Giannola | C | 1994-1994 | Ohlone College, North Alabama |
| Tyler Giannonatti | P | 2010-2014 | Kansas State, Chandler-Gilbert CC, Ohio State |
| Jon Gianquitti | P | 2005-2006 | Troy |
| Braxton Giavedoni | OF | 2017-2018 | Penn State |
| Cameron Gibbons | --- | 2020-2020 | Texas State |
| Chris Gibbons | P | 2016-2019 | New Jersey Tech |
| Daniel Gibbons | P | 2015-2017 | Army |
| Eric Gibbons | P | 2003-2006 | George Mason |
| Evan Gibbons | IF-P | 2019-2020 | Sacramento State |
| Gavin Gibbons | P | 2012-2012 | UMD-Baltimore Cty |
| Michael Gibbons | P | 2003-2006 | Pennsylvania |
| Mike Gibbons | P | 2016-2018 | Lehigh |
| Colin Gibbons-Fly | IF | 2014-2017 | George Washington |
| Ben Gibbs | P | 2009-2009 | Army |
| Ben Gibbs | P | 2019-2019 | Yale |
| Blake Gibbs | OF | 2009-2013 | Oregon State, Chico State |
| Brian Gibbs | IF | 2006-2009 | Marist, Canisius College |
| Cole Gibbs | OF | 2016-2016 | North Carolina |
| Elliott Gibbs | P | 2004-2008 | Valparaiso |
| Grant Gibbs | IF | 2012-2015 | Texas-San Antonio |
| Jordan Gibbs | IF-OF | 2014-2014 | Texas-Arlington |
| Josh Gibbs | P | 2009-2009 | Northern Iowa, Indian Hills CC-Centerville |
| Luke Gibbs | IF | 2014-2016 | Mississippi, Itawamba CC, UNC Charlotte |
| Marlon Gibbs | OF | 2013-2016 | Florida A&M |
| Matt Gibbs | P | 2011-2015 | Purdue |
| Maxwell Gibbs | P | 2014-2017 | Cal State Fullerton |
| Spence Gibbs | IF | 2004-2007 | Furman |
| Zach Gibbs | P | 2018-2019 | Missouri State |
| Brandon Gibis | IF-OF | 2014-2017 | Illinois-Chicago, Madison Area Technical College |
| Adam Gibson | OF | 1999-2002 | Tennessee-Martin |
| Adam Gibson | P | 2003-2006 | Indiana U.-Purdue U.-FW |
| Ben Gibson | P-IF | 2015-2018 | Quinnipiac |
| Brad Gibson | H | 2010-2010 | Miss. Valley St |
| Brett Gibson | P | 2008-2010 | Texas A&M-Corpus Christi |
| Brody Gibson | C | 2018-2019 | Oral Roberts |
| Bryce Gibson | C | 2004-2004 | Evansville |
| Cale Gibson | OF-P | 2017-2019 | Winthrop, FSC at jacksonville |
| Cameron Gibson | OF-P | 2012-2015 | Georgia Tech, Jacksonville, Chipola College |
| Casey Gibson | IF | 2012-2016 | Air Force, Nova Southeastern |
| Clay Gibson | P | 2005-2008 | UNC-Greensboro |
| Cody Gibson | P | 2010-2011 | Morehead State |
| Cole Gibson | P | 2017-2019 | Oakland |
| Daniel Gibson | H | 2007-2008 | Arkansas-Pine Bluff |
| Hunter Gibson | C-1B | 2018-2020 | Wichita State |
| Jacob Gibson | P | 2004-2005 | Prairie View A&M |
| Jason Gibson | P | 2012-2013 | McNeese State, Panola College |
| Johnny Gibson | P | 2003-2004 | Texas-Pan American, Collin County |
| Jordan Gibson | P | 2007-2007 | Charleston Southern |
| Kalen Gibson | P | 2003-2006 | Kentucky |
| Keyton Gibson | P | 2016-2019 | Georgia Tech |
| Kyle Gibson | C | 2011-2014 | Louisville |
| Maleeke Gibson | OF | 2013-2016 | Clemson |
| Mitch Gibson | P | 2015-2016 | Ball State |
| Nelson Gibson | P | 1966-1968 | Clemson |
| Paul Gibson | P | 2004-2007 | Quinnipiac |
| Ryan Gibson | SS | 2007-2007 | New Mexico State, Richland College |
| Scott Gibson | P | 2001-2003 | Alabama-Birmingham, Central Alabama CC |
| Tommy Gibson | IF | 2018-2019 | Penn State |
| Trevor Gibson | P | 2001-2003 | Washington |
| Tyler Gibson | P | 2014-2015 | New Mexico, West Texas A&M |
| Zack Gibson | IF-OF | 2012-2016 | Houston, Alvin CC, Texas A&M-Corpus Christi |
| Brennan Gick | OF | 2019-2019 | Northern Kentucky |
| Matt Gidaly | OF-P | 2003-2006 | Siena College |
| Luke Giddens | P | 2013-2014 | Louisiana Tech, Lincoln College |
| Cale Giddings | 1B | 2013-2016 | Akron, Lake Erie College |
| Logan Giddings | IF-OF | 2016-2019 | Bowling Green State, Ohio Dominican University |
| Bryan Gidge | P | 1998-1999 | Nevada, UNLV |
| Mike Gielarowski | P | 2006-2006 | Marshall |
| Drew Gierich | P | 2006-2007 | Eastern Illinois, Illinois Central College |
| Jeff Giersbrook | OF | 2008-2010 | Gardner-Webb |
| Sawyer Gieseke | IF | 2014-2017 | San Francisco, Arizona |
| Danny Gieselman | P | 2019-2019 | Michigan State |
| Hunter Gieser | --- | 2020-2020 | Abilene Christian |
| Dane Giesler | IF | 2014-2018 | Indiana State, Wabash Valley College |
| Mark Giesler | P-1B | 2014-2016 | Dayton |
| Neil Giesler | 1B | 2005-2006 | Northwest Florida State College, South Carolina |
| Josh Giffins | --- | 2020-2020 | Utah |
| Danny Gifford | P | 2011-2012 | Bradley, Wabash Valley College |
| Jason Gifford | P | 2015-2019 | NC A&T State, Shorter, Reinhardt University, Middle Georgia |
| Nik Gifford | IF-OF | 2016-2017 | Ark-Little Rock, Northern Oklahoma College-Enid Campus |
| Henry Gigeous | P | 2012-2012 | Oregon |
| Chris Giglio | IF | 2010-2011 | Western Illinois, Triton College |
| Chris Giglio | P | 2015-2017 | Princeton |
| Russ Giglio | OF | 2000-2003 | Lafayette College |
| Jake Gigliotti | --- | 2020-2020 | Northeastern |
| Brandon Gil | C | 2012-2015 | Ark-Little Rock |
| Ray Gil | 3B | 2018-2020 | Miami |
| AJ Gilbert | P | 2006-2008 | Georgia Southern |
| Ben Gilbert | OF-P | 2020-2020 | Mississippi |
| Bobby Gilbert | H | 2003-2005 | Bethune-Cookman |
| Cade Gilbert | IF | 2017-2020 | East Tennessee State |
| Caleb Gilbert | P | 2016-2018 | LSU |
| Cody Gilbert | OF | 2016-2016 | Murray State, Shawnee CC |
| Drew Gilbert | P | 2020-2020 | Tennessee |
| Dylan Gilbert | --- | 2018-2018 | Illinois-Chicago |
| Eric Gilbert | IF | 2015-2018 | Charleston Southern, North Greenville |
| Garrett Gilbert | C | 2018-2020 | Creighton |
| Geoffrey Gilbert | --- | 2020-2020 | Clemson |
| Greg Gilbert | IF | 2019-2020 | Butler |
| Griffin Gilbert | P | 2019-2019 | Fairleigh Dickinson |
| Hunter Gilbert | IF | 2014-2017 | USC-Upstate, Volunteer State CC |
| J.B. Gilbert | 2B | 2007-2008 | Austin Peay, Olney Central College |
| James Gilbert | P | 2004-2007 | Arkansas |
| Jeffrey Gilbert | OF | 1975-1975 | Cal State Northridge |
| Kyle Gilbert | C | 2015-2016 | Florida Gulf Coast |
| Mark Gilbert | IF | 2005-2006 | Sam Houston State, Hill College |
| Matthew Gilbert | P | 2005-2005 | Saint Joseph's |
| Michael Gilbert | IF | 2013-2016 | Southern Miss, Miss Gulf Coast |
| Mike Gilbert | C | 2006-2007 | Washington State, Edmonds CC |
| Richard Gilbert | P | 2018-2019 | Texas Tech, Blinn College |
| Sam Gilbert | P | 2008-2008 | Pennsylvania |
| William Gilbert | P | 2019-2019 | Cornell |
| William Gilbert | P | 2019-2019 | Baylor |
| Brian Gilbertson | P-1B | 2009-2010 | UNLV, Merced College |
| Logan Gilbertson | P | 2018-2020 | Central Arkansas |
| Matt Gilbertson | --- | 2020-2020 | Pittsburgh |
| Murray Gilbertson | OF | 2005-2007 | Lamar, New Mexico State, Blinn College |
| Scott Gilbertson | P | 2003-2004 | Nevada, Cosumnes River College |
| Ryan Gilboy | OF-IF | 2006-2008 | Austin Peay |
| Aaron Gilbreath | P | 2010-2013 | Dallas Baptist |
| Jacob Gilbreath | IF-P | 2018-2018 | Texas Southern |
| Kevin Gilbride | OF | 2000-2003 | Hawaii |
| Rich Gilbride | IF | 2017-2019 | Siena College, Suffolk |
| Brett Gilchrist | P | 2016-2019 | Dallas Baptist, Tarleton State |
| Tom Gilchrist | OF | 2012-2013 | UMD-Baltimore Cty, Chesapeake College |
| Levi Gilcrease | OF | 2015-2018 | Baylor |
| Zac Gilcrease | 3B | 2012-2015 | South Florida |
| Caleb Gilder | OF | 2019-2019 | Prairie View A&M, Jarvis Christian College |
| Beau Giles | P | 2005-2005 | Utah Valley U, Mesa State College |
| Chandler Giles | P | 2019-2019 | San Jose State |
| DeAngelo Giles | --- | 2020-2020 | NC State |
| Evan Giles | P | 2016-2019 | Indiana State |
| Jeremy Giles | IF | 2014-2017 | Stony Brook |
| Johnny Giles | H | 2005-2006 | Prairie View A&M |
| Kevin Giles | IF | 2004-2004 | Georgetown |
| Ryder Giles | IF | 2019-2020 | East Carolina |
| Jamie Giley | P | 2012-2012 | Louisiana Tech, Bossier Parish CC |
| Todd Gilfillan | C | 2005-2008 | Texas |
| Eric Gilgenbach | OF-IF | 2017-2020 | Notre Dame |
| Gary Gilheeney | P | 2011-2011 | NC State |
| Chris Gili | IF | 2011-2014 | Austin Peay, Pace |
| Drew Gilin | IF | 2019-2020 | Nebraska |
| Carvares Gilkey | P | 2004-2005 | Grambling State |
| Cory Gill | P | 2016-2019 | Troy |
| Danny Gill | OF | 2002-2002 | Sacramento State, American River College |
| Eddie Gill | 1B | 2003-2004 | UNLV, Sacramento City College |
| Jason Gill | COACH | 1994-1994 | Cal State Fullerton, Cal State Dominguez Hills, Cuesta College |
| Joe Gill | OF | 2009-2012 | Grambling State, Hill College |
| Josh Gill | IF-P | 2009-2010 | Louisiana-Monroe, Texarkana College |
| Justin Gill | P | 2016-2019 | Florida Gulf Coast, Polk State |
| Mac Gill | P-OF | 2012-2014 | UMD-Baltimore Cty |
| Marquise Gill | IF | 2013-2017 | Eastern Michigan |
| Pat Gill | P | 1999-2003 | Michigan State |
| Stephen Gill | IF | 2003-2006 | Butler |
| Thomas Gill | P | 2014-2015 | Va. Commonwealth |
| Brad Gillam | C | 2002-2002 | Kansas |
| James Gillean | IF | 2013-2017 | Ark-Little Rock, Grayson County College, St. Mary's |
| Mark Gillean | OF | 2011-2013 | Centenary College, Northwood |
| Seth Gilleland | P | 2006-2007 | Northern Colorado, Lamar CC, Central Missouri |
| Mike Gillen | P | 2003-2003 | San Diego State, Fresno City College |
| Aubrey Gillentine | P | 2019-2019 | Southern Miss |
| Kurt Giller | P | 2010-2015 | Nebraska, Oral Roberts |
| Matt Giller | IF | 2009-2012 | Kansas State |
| Mike Giller | 1B-C | 2007-2010 | Illinois |
| Jordan Gillerman | IF | 2017-2018 | St. John's, Irvine Valley College |
| Cody Gilles | IF | 2010-2012 | Ark-Little Rock, Heartland CC, UW Parkside |
| Robbie Gilles | C | 2009-2011 | High Point |
| Zach Gilles | OF | 2017-2020 | Central Michigan |
| Brett Gillespie | P | 2001-2004 | San Diego |
| Bryan Gillespie | 2B | 2002-2002 | Va. Commonwealth, Potomac State College of WVU |
| Drew Gillespie | P | 2017-2019 | New Mexico |
| Ed Gillespie | P | 2000-2002 | New York Tech |
| Grant Gillespie | P | 2008-2010 | Duquesne |
| John Gillespie | P | 1998-1998 | Washington |
| Jon Gillespie | C | 2003-2003 | Rice |
| Kevin Gillespie | IF | 2010-2011 | UNC Charlotte, Lincoln Trail College |
| Tate Gillespie | P | 2018-2019 | Texas A&M-Corpus Christi, Abilene Christian |
| Tyler Gillespy | IF | 2019-2019 | Campbell |
| Craig Gillet | P | 2008-2008 | Youngstown State, Genesee CC |
| Brandon Gillette | UT | 2009-2010 | George Washington, Napa Valley Junior College. |
| Gavin Gillette | P | 2001-2002 | Central Michigan, Grand Rapids CC |
| Eric Gilley | P | 2010-2011 | Middle Tenn State, Volunteer State CC |
| Jamie Gilley | P | 2012-2013 | Louisiana Tech, Bossier Parish CC |
| Gary Gillheeney | P | 2012-2012 | NC State |
| Bryan Gilliam | P | 2019-2019 | UMD-Baltimore Cty |
| Hunter Gilliam | IF | 2019-2019 | Longwood |
| Lee Gilliam | P | 2012-2015 | UNC-Greensboro |
| Mark Gilliam | 1B | 1992-2001 | Motlow State CC, Tennessee Tech |
| Sloan Gilliam | 1B | 2011-2012 | Coastal Carolina, Spartanburg Methodist College, Georgia Southern |
| Gage Gillian | --- | 2020-2020 | North Carolina |
| Keagan Gillies | P | 2017-2020 | Tulane |
| Brendan Gilligan | C | 2000-2003 | Georgia Southern |
| Conor Gilligan | P | 2014-2015 | Evansville |
| John Gilligan | P | 2010-2012 | Lamar, Alvin CC |
| Matt Gillikin | P | 2004-2006 | Valparaiso |
| Sam Gillikin | OF | 2013-2017 | Auburn |
| Jimmy Gilliland | IF | 2007-2008 | Indiana U.-Purdue U.-FW |
| Michael Gilliland | P | 2019-2020 | Jacksonville State |
| Tyler Gilliland | P | 2009-2010 | Western Kentucky |
| Jim Gillin | C | 2003-2007 | Villanova |
| Jason Gillins | P | 2004-2006 | Southern Utah |
| Aaron Gillis | P | 2013-2015 | Fresno State, San Joaquin Delta College, Sonoma State |
| Brett Gillis | IF-P | 2019-2020 | Portland |
| Jackson Gillis | P | 2017-2019 | Vanderbilt |
| Jared Gillis | H | 2017-2019 | Delaware State |
| Logan Gillis | 3B-SS | 2010-2013 | Northeastern, Bentley College |
| Spencer Gillis | P | 2015-2017 | Savannah State |
| Paul Gillispie | OF | 2001-2004 | Virginia |
| Tommy Gillman | IF | 2017-2020 | Texas A&M, Midland College, Air Force |
| Drew Gillmore | IF | 2004-2005 | Cal Poly, Ohlone College |
| Brian Gillory | P | 2008-2008 | Texas Southern |
| Garret Gillum | P-IF | 2019-2020 | North Alabama |
| Darius Gillus | IF | 2016-2017 | Old Dominion |
| TJ Gilmer | IF | 2003-2006 | Texas-Pan American |
| Wes Gilmer | IF-C | 2008-2011 | Auburn |
| Craig Gilmore | P | 2004-2004 | Alabama A&M |
| J.T. Gilmore | OF | 2014-2017 | Texas-San Antonio |
| Jacob Gilmore | P | 2017-2020 | Illinois State |
| Jeff Gilmore | IF-P | 2002-2006 | Iowa, Dallas Baptist |
| Kohl Gilmore | 1B-3B | 2017-2019 | Florida Gulf Coast, Indian River CC |
| Marc Gilmore | C | 2002-2003 | Florida Atlantic, Broward College, Mercer |
| Stephen Gilmore | P | 2012-2015 | Gardner-Webb |
| Taylor Gilmore | IF | 2009-2010 | Wichita State, Cloud County CC |
| Ty Gilmore | IF | 2013-2014 | Eastern Michigan, Central Arizona College, MSU Billings |
| John Gilreath | P | 2018-2019 | South Carolina |
| Brian Gilroy | P | 2008-2011 | Jacksonville |
| Greg Gilroy | C | 2007-2010 | New York Tech |
| Michael Gilroy | P | 2012-2015 | Winthrop, North Greenville |
| Jordan Gilruth | P | 2009-2012 | Iona College |
| Brandon Giltrow | C | 2016-2019 | Wright State |
| Eric Giltz | OF | 2016-2019 | SIU-Edwardsville |
| Colin Gimblet | 1B | 2015-2018 | Towson |
| Luis Gimenez | IF | 2016-2019 | Campbell, Indian Hills CC-Centerville |
| Matt Gimenez | IF | 2014-2017 | Long Beach State, Santa Barbara City College |
| Dan Ginader | P | 2011-2014 | University at Buffalo |
| Langston Ginder | IF | 2019-2019 | Ball State |
| Carl Gindl | OF | 2018-2019 | Mississippi |
| Diego Gines | --- | 2020-2020 | Indiana State |
| Anthonty Gingerelli | 3B | 2013-2015 | Bucknell |
| Justin Gingerich | P | 2008-2008 | Notre Dame, Bethel College |
| Gui Gingras | 1B | 2016-2017 | St. John's, Monroe CC |
| Lucas Gingrich | C | 2005-2005 | Pepperdine, San Jose City College |
| J.T. Ginn | P | 2019-2020 | Mississippi State |
| Kyle Ginn | H | 2005-2006 | SE Louisiana, Meridian CC |
| Elliot Ginns | IF | 2018-2019 | Brown |
| Brian Ginsberg | IF | 2015-2018 | Brown |
| Caleb Ginsberg | C | 2004-2007 | Northeastern, West Virginia |
| Cory Ginther | P | 2011-2012 | UNLV, Cuesta College, San Diego |
| Michael Ginther | P | 2014-2018 | Canisius College |
| Tom Ginther | P | 2019-2019 | North Dakota State |
| Anthony Gioielli | IF | 2002-2005 | Wagner |
| Anthony Gionesi | P | 2008-2009 | Hofstra, SUNY-Farmingdale |
| Mike Gionesi | P | 2006-2007 | Stony Brook |
| Alex Gionis | IF | 2017-2019 | Holy Cross |
| Joe Giordanella | P | 1986-1986 | Ocean County College, Oklahoma State |
| Chris Giordano | P | 2014-2016 | Georgetown |
| Evan Giordano | SS-3B | 2019-2019 | Stony Brook |
| Jeff Giordano | P | 2008-2011 | Rider |
| Marc Giordano | OF | 2004-2008 | Manhattan College |
| Max Giordano | SS-P | 2019-2019 | Niagara |
| Mike Giordano | P | 2009-2012 | Manhattan College |
| Mikey Giordano | P | 2020-2020 | Boston College |
| Gabe Giosso | IF | 2018-2020 | St. Mary's (CA) |
| Justin Giovannoni | P | 2015-2018 | Pacific |
| Tyler Giovanoni | P | 2015-2019 | Texas State, Texas-San Antonio |
| Matt Giovinazzo | IF | 2010-2012 | UCLA |
| Tyler Giovinco | P | 2016-2019 | Army |
| Garrett Gipe | IF | 2003-2007 | USC, California Baptist |
| Brett Gips | P | 2008-2009 | Texas A&M-Corpus Christi, Cisco Junior College |
| Jason Gipson | H | 2006-2006 | Grambling State |
| Robert Gipson | C | 2004-2005 | Southern, Alvin CC |
| Thomas Girard | P | 2018-2020 | Duke |
| Nick Girardi | P-OF | 2012-2016 | Manhattan College, St. Joseph-LI |
| Toby Girazian | P | 2003-2004 | Fresno State |
| Alain Girman | P | 2013-2014 | Mount Saint Mary, Manatee-Sarasota |
| Jim Girolamo | OF-2B | 2003-2006 | Fairfield |
| Jacob Giron | C | 2015-2017 | Arkansas-Pine Bluff, Lamar CC |
| Alex Gironda | P | 2015-2015 | Cal Poly |
| Cole Girouard | OF | 2017-2020 | Lamar |
| Tyler Girouard | 3B | 2012-2015 | Louisiana-Lafayette |
| Mike Giroud | IF-OF | 2002-2005 | East Tennessee State |
| Alex Giroux | --- | 2020-2020 | Washington |
| Braden Giroux | OF | 2017-2018 | Purdue, Wabash Valley College |
| Zach Girrens | P | 2014-2018 | Saint Louis, Central Missouri |
| Justin Gisch | IF-OF | 2012-2013 | Santa Clara |
| Nolan Gisclair | OF | 2007-2008 | Louisiana-Lafayette, Delgado CC |
| Tom Githens | P | 2017-2019 | Northeastern |
| Steven Gitlitz | C | 2010-2010 | Binghamton |
| Jake Gitter | IF | 2018-2020 | Northern Colorado |
| Andrew Gitto | IF | 2005-2005 | Saint Peter's |
| Dave Giuliani | OF | 2008-2011 | Stanford |
| Dave Giuliano | OF | 2019-2019 | Cornell |
| David Giusti | P | 2016-2019 | Lafayette College |
| John Giusti | IF | 2005-2008 | Valparaiso |
| Kyle Giusti | IF | 2013-2014 | Abilene Christian, Galveston College |
| Juan Givan | IF | 2016-2017 | Nicholls State |
| Floyd Given | OF | 2010-2012 | Pepperdine, Sacramento City College |
| Andy Givens | P | 1999-2003 | Richmond |
| Bert Givens | OF | 2012-2016 | Florida State, Chipola College, Troy |
| Damien Givens | P | 2004-2005 | Southern, Meridian CC |
| Dylan Givens | P | 2017-2020 | SE Missouri State, John A. Logan College, Southern Illinois |
| Eric Givens | OF | 2008-2009 | Texas Christian |
| Ke'One Givens | IF-OF | 2017-2017 | Oklahoma |
| Scott Givens | P | 2005-2006 | Maryland-Eastern Shore |
| Terry Givens | H | 2006-2006 | Alabama State |
| Shawn Gizynski | C-OF | 2007-2008 | Dayton, Spokane Falls CC |
| 321 record(s) |