The 1998–99 Arkansas State Indians men's basketball team represented Arkansas State University during the 1998–99 NCAA Division I men's basketball season. The Indians, led by second-year head coach Dickey Nutt, played their home games at the First National Bank Arena in Jonesboro, Arkansas as members of the Sun Belt Conference.
After finishing second in the conference regular season standings, the team won the Sun Belt tournament to secure the conference's automatic bid to the NCAA tournament. Playing as the No. 15 seed in the Midwest region, Arkansas State was beaten by No. 2 seed Utah, 80–58, in the opening round.
To date, this season marks the only appearance in the NCAA tournament in program history.
Roster
Schedule and results
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!colspan=9 style=| Non-conference regular season
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!colspan=9 style=| Sun Belt Conference regular season
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!colspan=9 style=| Sun Belt tournament
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!colspan=9 style=| NCAA tournament
Awards and honors
Chico Fletcher Sun Belt Conference Player of the Year (2x)