The 1998–99 Kent State Golden Flashes men's basketball team represented Kent State University as a member of the Mid-American Conference during the 1998–99 NCAA Division I men's basketball season.

Led by head coach Gary Waters, the Flashes played their home games at the Memorial Athletic and Convocation Center in Kent, Ohio.

After finishing second in the MAC East standings, Kent State won the MAC tournament to receive the conference's automatic bid to the NCAA tournament – the first appearance in program history.

11 seed in the East region, the team was beaten by No.

Kent State finished the season with a record of 23–7 (11–5 MAC).