Cadman is a surname. Notable people with the surname include:

Alan Cadman (born 1937), Australian politician

Alfred Cadman (1847–1905), New Zealand politician

Bill Cadman (born 1960), American politician from Colorado

Charles Wakefield Cadman (1881–1946), American composer

Christine Cadman (1908), British archer

Chuck Cadman (1948–2005), Canadian politician

Colin Cadman (1916–1971), Scottish botanist

David Cadman, Vancouver city councillor

Deborah Cadman (born 1963), British politician

Dona Cadman (born 1950), Canadian politician

Dorothy A. Cadman ( 1908–1927), English painter

Elijah Cadman (1843–1927), English evangelist

F. K. Cadman (1904–1931), British socialist

John Cadman (disambiguation), multiple people

Radclyffe Cadman (1924–2011), South African politician

Robert Cadman (1711–1739), British steeplejack and ropeslider

Royce Cadman (born 1987), English rugby union player

S. Parkes Cadman (1864–1936), American clergyman, newspaper writer

Samuel Cadman (1877–1952), English cricketer

Stacey Cadman (born 1979), British actress and television presenter

William Cadman (1883–1948), English missionary

William Cadman (priest) (1815-1891), English evangelist and clergyman

English-language surnames

Cadman (surname)