Midwinter is a surname. Notable people with the surname include:
Billy Midwinter (1851–1890), English and Australian cricketer Brian Midwinter, judge in Manitoba, Canada Eric Midwinter (born 1932), British educator and writer James Robert Midwinter (1929–2017), Canadian ambassador to Venezuela 1983–1985, inspector general of the foreign service 1979–1983 William Robinson Midwinter (1885–1966), founder of British ceramics company Midwinter Pottery