Momsen is a surname. Notable people with the surname include:
Bob Momsen (1929–2010), American football player Charles Momsen (1896–1967), American pioneer in submarine rescue for the United States Navy Hans Momsen (1735–1811), North Frisian farmer, mathematician and astronomer Johan Momsen (born 1995), South African rugby union player Richard Paul Momsen (1891–1965), American/Brazilian lawyer, US Consul General in Rio de Janeiro Taylor Momsen (born 1993), American actress, musician and model Tony Momsen (1928–1994), American football center in the National Football League
See also Momsen lung, primitive underwater rebreather used before and during World War II by American submariners as emergency escape gear , an Arleigh Burke-class destroyer in the United States Navy Mom Song (disambiguation) Mommsen Monson (surname), another surname