Mellin is a German surname of the noble . Notable people with the surname include:
Albert Mellin, Finnish architect Charles Mellin (1597–1649), French painter Hjalmar Mellin (1854–1933), Finnish mathematician Lena Mellin, Swedish journalist Ludwig August Mellin (1754–1835), Baltic German cartographer and politician Max Mellin (1904–1977), German art director Gustav Mellin, founder of Mellin's Food an early infant formula manufacturer Robert Mellin (1902–1994), Russian Empire-born American composer, lyricist, and music publisher Thomas Mellin-Olsen, Norwegian long jumper
See also Mellin (disambiguation) Mellino