Marth may refer to:
Marth, Thuringia, Germany
People with the surname Albert Marth (1828–1897), German astronomer Christophe Marth (born 1980), French rugby player Frank Marth (1922–2014), American actor Tommy Marth (1978–2012), American saxophonist who performed with The Killers
Other uses Marth (Fire Emblem), a video game character Marth (lunar crater), a crater on the Moon Marth (Martian crater), a crater on Mars