Lowman is a surname. People with the surname include:

• David Lowman (intelligence official) (1921–1999), American executive for the National Security Agency
• David Lowman (priest) (born 1948), British Anglican priest and former archdeacon
• Guy Lowman (1877–1943), American football, basketball, and baseball coach and baseball player
• Guy Sumner Lowman Jr. (1909–1941), American linguist
• G. E. Lowman (1897–1965), American Methodist minister and radio evangelist
• Margaret D. Lowman (born 1953), American biologist, ecologist, writer, and explorer
• Mary D. Lowman (1842–1912), American mayor
• Moses Lowman (1680–1752), an English nonconformist minister
• Nate Lowman (born 1979), American artist
• Paul Lowman (fl. 1999–present), Canadian musician
• Paul D. Lowman (1931–2011), American geophysicist
• Rodney L. Lowman (born 1949), American psychologist
• Seymour Lowman (1868–1940), American lawyer and Lieutenant Governor of New York

Fictional characters include:

• Happy (Sons of Anarchy), on the television show Sons of Anarchy