Mawby is a surname. Notable people with the surname include:
Colin Mawby (1936–2019), English organist, choral conductor and composer Maurice Mawby (1904–1977), Australian mining industry leader Ray Mawby (1922–1990), British politician Russell Mawby (1928–2017), American academic and philanthropist Sarah Mawby (born 1965), British fencer
See also Mawbyite, a mineral The Mawby Triplets, three English sisters who were child actors Demi Rose (born 1995), British model