The 1983–84 Rider Broncs men's basketball team represented Rider University in the 1983–84 NCAA Division I men's basketball season.

The Broncs, led by ninth-year head coach John Carpenter, played their home games at the Alumni Gymnasium in Lawrenceville, New Jersey as members of the East Coast Conference.

In the ECC tournament, they defeated No.

3 seed Drexel, and top seed Bucknell (in OT) to win the tournament and earn the first bid to the NCAA Tournament in program history.

12 seeds in the East region of the 1984 NCAA tournament, the Broncs were defeated by Richmond, 89–65, in the play-in round.