Hellmuth is both a masculine German given name and a surname. Notable people with the name include:
Given name:
Hellmuth Heye (1895–1970), German admiral and politicianHellmuth Hirth (1886–1938), German engineer who founded engine manufacturing companiesHellmuth Karasek (1934–2015), German journalist, literary critic, novelist and authorHellmuth Mäder (1908–1984), German generalHellmuth Reymann (1892–1988), German Army officerHellmuth Walter (1900–1980), German engineer who pioneered research into rocket engines and gas turbinesHellmuth Wolff (organ builder) (1937–2013), Canadian organ builderSurname:
Isaac Hellmuth (1819–1901), founder of Huron University College and the University of Western OntarioOtto Hellmuth (1896–1968), member of the Nazi partyPhil Hellmuth (born 1964), American poker player