The 2017–18 Jacksonville State Gamecocks men's basketball team represented Jacksonville State University during the 2017–18 NCAA Division I men's basketball season. The Gamecocks, led by second-year head coach Ray Harper, played their home games at the Pete Mathews Coliseum in Jacksonville, Alabama as members of the Ohio Valley Conference. They finished the season 23–13, 11–7 in OVC play to finish in fourth place. They defeated Tennessee Tech in the quarterfinals of the OVC tournament before losing in the semifinals to Murray State. They were invited to the College Basketball Invitational where they defeated Canisius and Central Arkansas to advance to the semifinals where they lost to North Texas.