The 2019 LIU Sharks football team represented both the LIU Post and LIU Brooklyn campuses of Long Island University in the 2019 NCAA Division I FCS football season.

They were led by 22nd yearhead coach Bryan Collins and played their home games at Bethpage Federal Credit Union Stadium.

This was the first season that the LIU Sharks were competing as a team following the merger of the two LIU campuses' athletic departments in the summer of 2019.

A month after the season ended, starting quarterback Clay Beathard was stabbed to death in Nashville, Tennessee.

[3] The NEC released their preseason coaches' poll on July 24, 2019.