| Mode: | Basketball |
| Year: | 2012–13 |
| Prev Year: | 2011–12 |
| Next Year: | 2013–14 |
| Team: | Jacksonville State Gamecocks |
| Conference: | Ohio Valley Conference |
| Short Conf: | OVC |
| Record: | 17–11 |
| Conf Record: | 8–8 |
| Head Coach: | James Green |
| Hc Year: | 5th |
| Asst Coach1: | Tom Schuberth |
| Asst Coach2: | Reggie Sharp |
| Asst Coach3: | Eugene Harris |
| Stadium: | Pete Mathews Coliseum |
The 2012–13 Jacksonville State Gamecocks men's basketball team represented Jacksonville State University during the 2012–13 NCAA Division I men's basketball season. The Gamecocks, led by fifth year head coach James Green, played their home games at the Pete Mathews Coliseum and were members of the Ohio Valley Conference. Due to low APR scores, the Gamecocks were ineligible to participate in postseason play, including the Ohio Valley Tournament. They finished the season 17–11, 8–8 in OVC play to finish in fourth place in the East Division.
| Number | Name | Position | Height | Weight | Year | Hometown | |
|---|---|---|---|---|---|---|---|
| 2 | Ronnie Boggs | Guard | 6–4 | 172 | Senior | Kansas City, Missouri | |
| 3 | Alex Anderson | Guard | 5–11 | 175 | Freshman | Memphis, Tennessee | |
| 4 | Tarvin Gaines | Forward | 6–6 | 225 | Senior | West Memphis, Arkansas | |
| 5 | Mason Leggett | Guard | 6–0 | 180 | Senior | Zachary, Louisiana | |
| 10 | Gus Klaus | Guard | 6–1 | 175 | Freshman | Jackson, Missouri | |
| 11 | Darion Rackley | Guard | 6–2 | 160 | Sophomore | St. Louis, Missouri | |
| 12 | Rico Sanders | Guard | 6–2 | 180 | Junior | College Park, Georgia | |
| 13 | Chris Deanes | Guard | 5–11 | 175 | Freshman | Memphis, Tennessee | |
| 14 | Rinaldo Mafra | Forward | 6–7 | 220 | Senior | Recife, Brazil | |
| 20 | Giovanni Smith | Guard | 6–1 | 190 | Junior | Manchester, Jamaica | |
| 21 | Brian Williams | Guard | 6–1 | 185 | Junior | Lawrenceville, Georgia | |
| 22 | Mike Louder | Forward | 6–9 | 185 | Freshman | Henderson, Nevada | |
| 24 | Darrius Moore | Forward | 6–8 | 252 | Freshman | Memphis, Tennessee | |
| 25 | Rod McReynolds | Guard | 5–8 | 150 | Junior | Douglasville, Georgia | |
| 31 | Teraes Clemmons | Guard/Forward | 6–6 | 220 | Junior | Mt. Juliet, Tennessee | |
| 32 | Joe Kuligoski | Guard/Forward | 6–5 | 205 | Freshman | Orland Park, Illinois | |
| 33 | Nick Cook | Forward | 6–6 | 220 | Junior | Hattiesburg, Mississippi |
|-!colspan=9| Exhibition|-!colspan=9| Regular Season