Oliver or Ollie Brown may refer to:

• Oliver Brown (American activist) (1918–1961), plaintiff in the case Brown v. Board of Education
• Oliver Brown (baseball) (1849–1932), American baseball player
• Oliver Brown (footballer) (1908–1953), English footballer, also known as Buster Brown, active in the 1930s
• Oliver Brown (snooker player) (born 1994), English snooker player
• Oliver C. Brown (born 1946), American percussionist
• Ollie Brown (baseball) (1944–2015), Major League Baseball player
• Ollie E. Brown (born 1953), American drummer and record producer, half of duo Ollie & Jerry
• Oli Brown (born 1990), British blues musician
• Oliver Brown (died 1859), son of abolitionist John Brown
• Oliver Brown (Scottish activist) (1903–1976), Scottish nationalist activist
• Ollie Brown (racing driver) (born 1983), British racing driver