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

• Duncan Ronaldson (1879–1947), Scottish football player

• James Ronaldson (1769–1841), co-founder of Binny & Ronaldson

• John Ronaldson (1946–2026), Australian rules football player

• Malcolm Ronaldson (1917–2004), South African cricketer

• Michael Ronaldson (born 1954), Australian politician

• Tony Ronaldson (born 1972), Australian basketball player