The 2025 LIU Sharks football team represented both the LIU Post and LIU Brooklyn campuses of Long Island University as a member of the Northeast Conference (NEC) during the 2025 NCAA Division I FCS football season. The Sharks were led by fourth-year head coach Ron Cooper and played their home games at Bethpage Federal Credit Union Stadium in Brookville, New York.
The NEC released their preseason coaches' poll on August 4, 2025. The Sharks were picked to finish in third place, tied with Robert Morris.