The 1984 Indiana State Sycamores football team represented Indiana State University as a member of the Missouri Valley Conference (MVC) during the 1984 NCAA Division I-AA football season.
They were led by fifth-year head coach Dennis Raetz and played their home games at Memorial Stadium.
They were invited to the NCAA Division I-AA playoffs, where they lost to Middle Tennessee State, in the quarterfinal by a score of 42–41 in triple overtime.
The roster included cornerback Wayne Davis and safety Vencie Glenn, who both went on to careers in the National Football League (NFL).
Future college head coach Trent Miles was a wide receiver.