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 politician
Hellmuth Hirth (1886–1938), German engineer who founded engine manufacturing companies
Hellmuth Karasek (1934–2015), German journalist, literary critic, novelist and author
Hellmuth Mäder (1908–1984), German general
Hellmuth Reymann (1892–1988), German Army officer
Hellmuth Walter (1900–1980), German engineer who pioneered research into rocket engines and gas turbines
Hellmuth Wolff (organ builder) (1937–2013), Canadian organ builder
Surname:
Isaac Hellmuth (1819–1901), founder of Huron University College and the University of Western Ontario
Otto Hellmuth (1896–1968), member of the Nazi party
Phil Hellmuth (born 1964), American poker player
