Helmuth is both a masculine German given name and a surname. Notable people with the name include:
Given name;
Helmuth Theodor Bossert (1889–1961), German art historian, philologist and archaeologistHelmuth Duckadam (born 1959), Romanian former footballerHelmuth Ehrhardt, German psychiatristHelmuth Hübener (1925–1942), German opponent of the Third ReichHelmuth Koinigg (1948–1974), Austrian racing driverHelmuth Lehner (born 1968), Austrian musicianHelmuth Lohner (1933–2015), Austrian actor and theatre directorHelmuth Markov (born 1952), German politicianHelmuth von Moltke (disambiguation), several peopleHelmuth Nyborg (born 1937), Danish professor at Aarhus UniversityHelmuth von Pannwitz (1898–1947), German General distinguished as a cavalry officerHelmuth Plessner (1892–1985), German philosopher and sociologistHelmuth Rilling (born 1933), German conductorHelmuth von Ruckteschell (1890–1948), German navy officerHelmuth Schneider (1920–1972), German actorHelmuth Schwenn (1913–1983), German water polo playerHelmuth Søbirk (1916–1992), Danish amateur footballerHelmuth Stieff (1901–1944), German general and member of the OKHHelmuth Weidling (1891–1955), German Army officeSurname:
Frits Helmuth (1931–2004), Danish actorJustus Christian Henry Helmuth (1745–1824), German-American Lutheran clergymanOsvald Helmuth (1894–1966), Danish stage and film actor and revue singer; father of Frits Helmuth