John Harvey may refer to:

People

Academics

• John Harvey (astrologer) (1564–1592), English astrologer and physician
• John Harvey (architectural historian) (1911–1997), British architectural historian, who wrote on English Gothic architecture and architects
• John Harvey (psychologist) (born 1943), American psychologist
• John F. Harvey (John Francis Harvey, 1918–2010), Catholic priest and moral theologian, founder of Courage Apostolate
• John T. Harvey (born 1961), English-born American professor of economics at Texas Christian University

The arts and entertainment

• John Harvey (actor) (1911–1982), English stage and film actor
• John Harvey (American actor) (1917–1970), American actor
• Harvey (announcer) (John Harvey, born 1951), American television and radio personality
• John Harvey (author) (born 1938), British author of crime fiction
• John Harvey (filmmaker), Australian producer, director and screenwriter, co-producer of 2017 TV series The Warriors
• John D. Harvey (born 1968), American horror novelist

Business

• John Harvey (ironfounder), partner in Harveys of Hayle, late-18th-century ironfounders, father-in-law of Richard Trevithick
• John Anthony Harvey (born 1935), British entrepreneur and logistician

Government and politics

• John Harvey (Virginia governor) (died 1646), 17th-century Crown governor of Virginia
• John Harvey (Albemarle) (died 1679), Governor of Colonial North Carolina
• John Harvey (North Carolina politician) (died 1775), 18th-century Speaker of the North Carolina House of Representatives
• John Harvey (British Army officer) (1778–1852), officer during the War of 1812 and Governor of several Canadian provinces
• John Harvey (Australian politician) (1823–1893), politician in the early days of South Australia, founder of the town of Salisbury
• John Musgrave Harvey (1865–1940), Australian judge
• John Harvey (British politician) (1920–2008), British Conservative MP for Walthamstow East

Military

• John Harvey (Royal Navy officer, born 1772) (1772–1837), long serving Royal Navy officer
• John Harvey (Royal Navy officer, born 1740) (1740–1794), long serving naval officer killed at the Glorious First of June
• John Harvey (RAAF officer) (born 1954), current serving RAAF Air Marshal
• John C. Harvey Jr. (born 1951), admiral in the United States Navy

Sports

• John Harvey (racing driver) (1938–2020), winner of the 1983 Bathurst 1000
• John Harvey (cricketer) (1939–2003), English cricketer
• John Harvey (rugby league) (born 1955), Australian rugby league player and coach
• John Harvey (American football) (born 1966), National Football League running back
• John Harvey (Canadian football) (born 1950), Canadian Football League running back
• John Harvey (football manager), manager of Heart of Midlothian F.C. 1966–1970
• John Harvey (footballer, fl. 1890–1900), Scottish footballer (Sunderland AFC)
• John Harvey (footballer, born 1933), Scottish footballer (Partick Thistle)
• John Harvey (cyclist) (1884–?), English cyclist

Ships and boats

• SS John Harvey, a 1942 Second World War Liberty ship
• John J. Harvey, historic retired New York City fireboat