Jack Parker Halliday (June 5, 1928 – May 23, 2000) was an American professional football defensive tackle who played one season with the Los Angeles Rams of the National Football League (NFL).

Jack Parker Halliday was born on June 5, 1928, in Dallas, Texas.

[1] Halliday was a member of the SMU Mustangs of Southern Methodist University from 1946 to 1949 and a three-year letterman form 1947 to 1949.

[2] Halliday was selected by the Baltimore Colts in the fifth round, with the 54th overall pick, of the 1950 NFL draft.

[5] Halliday also started for the Rams in the 1951 NFL Championship Game, a 24–17 victory over the Cleveland Browns.