Mergen is a surname and given name. Notable people with the name include:

Surname Anne Briardy Mergen (1906–1994), American editorial cartoonist Sophie Mergen, French radio and television journalist

Given name Mergen Mämmedow (born 1990), Turkmenistan athlete

See also Mergen, Turkish deity Mergens, surname Mergen (city), a former name of Nenjiang in northeastern China