Robert Walter "Bob" Mattick (born c. 1933) is a retired American basketball player. He played collegiately at Oklahoma A&M University and was named a second team All-American in 1954.
Mattick, a 6'11 center from Chicago, played for Oklahoma A&M from 1951–54. Mattick was a star for the Aggies and one of the premier big men in college basketball his last two seasons. Mattick was named All-Missouri Valley Conference both years, and led the Aggies to two NCAA Tournament bids in 1953 and 1954. As a senior, Bob Mattick became the first player in Oklahoma A&M (now called Oklahoma State) history to average more than 20 points per game (20.7) and the first to average a double-double (20.7 points, 11.2 rebounds per game). He was named a consensus second team All-American that year. He finished with 1,378 points (16.6 per game) and 772 rebounds (9.3 per game) for his three-year career.