Marwick can be both a masculine given name and a surname. Notable people with the name include:
Marwick Khumalo, Swazi parliamentarian Arthur Marwick (1936–2006), British social historian Ernest Marwick (1915–1977), Scottish writer Hugh Marwick (1885–1965), Scottish scholar James Marwick (1862–1936), founder of accountancy practice KPMG John Marwick (1891–1978), New Zealand palaeontologist and geologist Thomas Marwick (1895–1960), Australian politician Thomas P. Marwick (1854–1927), Scottish architect Tricia Marwick (born 1953), Scottish politician Warren Marwick (1869–1955), Australian politician William Marwick (1833–1925), Western Australian settler