Mowlem, also Mowlam, is a surname. Notable people with the surname include:

Mowlem Arthur Rainsford Mowlem (1902–1986), New Zealand-born British plastic surgeon John Mowlem (1788–1868), British stonemason and builder John Mowlem (rugby union) (1870–1951), New Zealand rugby union player Johnny Mowlem (born 1969), British racing driver

Mowlam Mo Mowlam (1949–2005), English politician Stephen Mowlam (born 1976), Australian hockey player