Robert or Bob Dunn may refer to:

• Robert Dunn (footballer) (born 1979), Scottish footballer
• Robert Dunn (handballer) (born 1973), American handball player
• Robbie Dunn (born 1960), Australian former soccer player
• Bob Dunn (American football) (1904–1978), American football player

• Robert C. Dunn (1855–1918), American politician
• Robert G. Dunn (1923–2017), American politician
• Robert N. Dunn (1857–1925), Justice of the Idaho Supreme Court
• Robert W. Dunn (1895–1977), American political activist and economic researcher
• Bob Dunn (politician) (1946–2003), British Conservative Party MP for Dartford, 1979–1997

• Robert Dunn (biologist), American biologist and writer
• Robert Dunn (novelist) (born 1950), American novelist
• Robert Dunn (surgeon) (1799–1877), British physician
• Bob Dunn (cartoonist) (1908–1989), American cartoonist
• Bob Dunn (musician) (1908–1971), pioneer Western swing musician
• Bobby Dunn (1890–1937), comic actor
• Robbie Dunn (musician) (born 1951), Irish folk singer-songwriter
• Robert 'Dolly' Dunn (1941–2009), Australian former school-teacher, convicted of child molestation in 2001
• Robert F. Dunn (born 1928), American admiral
• Robert Ellis Dunn (1928–1996), American postmodern dance pioneer

• Robert Dunne (disambiguation)
• Robert Done (1904–1982), English footballer
• Robert Donne (born 1967), guitarist