The LIU Brooklyn Blackbirds were the athletic teams representing Long Island University's campus in Brooklyn, New York in intercollegiate athletics, including men's and women's basketball, cross country, golf, soccer, and track; women's-only bowling, lacrosse, softball, tennis, and volleyball; and men's-only baseball.

The Blackbirds competed in NCAA Division I and were members of the Northeast Conference.

The new program now competes as the LIU Sharks with a blue and gold color scheme.

After the school's uniforms were changed to black in 1935, a Brooklyn Eagle reporter from the Midwest saw the new look as the basketball team dribbled up and down the court and stated that the team looked like the blackbirds from back home; the comment struck home, and a new nickname was born.

[7] Markus won the 1967 Hermann Trophy as the outstanding collegiate soccer player of the year.