Marquart is a surname. Notable people with the surname include:
Josef Markwart (1864–1930) also known as Josef Marquart, German historian and orientalist Johannes Marquart (1909–?), German actuarial mathematician and cryptanalyst Kyle Marquart, American politician Ludwig Clamor Marquart (1804–1881), German pharmacist and entrepreneur Michael Marquart, American musician Paul Marquart (born 1957), American politician William Marquart (1915–1960), Canadian boxer
See also Variant spellings of the surname: Marquard (disambiguation) Marquardt Markwart