Robert Joseph "Bob" Duffy (born September 26, 1940) is a retired American professional basketball player and college coach. He played college basketball at Colgate University, and in 1962 he was selected as the 10th overall pick in the NBA Draft. He graduated as the leading scorer in school history, and his record 1,591 points stood for 19 years. Duffy was also a Helms Athletic FoundationAll-American in 1961–62.
In his three NBA seasons, Duffy averaged 4.3 points and 1.1 rebounds per game. He eventually became the head coach of his alma mater and compiled an overall record of 25–43 in three seasons. In his later life, he founded Duffy Broadcasting.
National champion Postseason invitational champion Conference regular season champion Conference regular season and conference tournament champion Division regular season champion Division regular season and conference tournament champion Conference tournament champion