The 2021 Sacred Heart Pioneers football team represented Sacred Heart University as a member of the Northeast Conference (NEC) in the 2021 NCAA Division I FCS football season.

Led by tenth-year head coach Mark Nofri, the Pioneers compiled an overall record of 8–4 with a mark of 6–1 in conference play, winning the NEC title.

Sacred Heart earned the conference's automatic bid to the NCAA Division I Football Championship playoffs, losing in the first round to Holy Cross.

The team played home games at Campus Field in Fairfield, Connecticut.

This college football 2020s season article is a stub.