Mabey is a surname. Notable people with the surname include:
Bevil Mabey (1916–2010), English businessman and inventor Claire Mabey, New Zealand writer Charles R. Mabey (1877–1959), American politician Paul Mabey (c. 1786–1863), merchant and political figure in Prince Edward Island Reginald W. Mabey (1932–2000), Canadian politician Richard Mabey (born 1941), British naturalist and author