Hartmut may refer to:
- Hartmut Bagger (born 1938), retired German general of the Bundeswehr
- Hartmut Becker (born 1938), German actor
- Hartmut Boockmann (1934–1998), German historian and researcher in medieval history
- Hartmut Briesenick (born 1949), East German athlete, mainly men's shot put
- Hartmut Büttner, German politician (German Christian Democratic Union)
- Hartmut Dresia, German politician (German Christian Democratic Union)
- Hartmut Elsenhans (born 1941), German political scientist, professor at the Universität Leipzig
- Hartmut Engels, German politician (German Christian Democratic Union)
- Hartmut Erbse (1915–2004), German classical philologist
- Hartmut Esslinger (born 1944), German-American industrial designer
- Hartmut Fähndrich (born 1944), German-Arabic translator
- Hartmut Faust (born 1965), West German sprint canoeist
- Hartmut Fromm (born 1950), retired German football defender
- Hartmut Geerken (born 1939), German musician, composer, writer, journalist, playwright, and filmmaker
- Hartmut Gründler (1930–1977), German teacher who burned himself out of protest
- Hartmut Haenchen (born 1943), German orchestra conductor
- Hartmut Hamerich, German politician (German Christian Democratic Union)
- Hartmut Heidemann (born 1941), retired German football player
- Hartmut Heinrich (born 1952), German marine geologist and climatologist
- Hartmut Honka, German politician (German Christian Democratic Union)
- Hartmut Jahreiß, German astronomer associated with Astronomisches Rechen-Institut
- Hartmut Jürgens (born 1955), German mathematician
- Hartmut Kallmann (1896–1978), German physicist
- Hartmut Konschal (born 1953), German football coach and a former player
- Hartmut Krüger (born 1953), former East German handball player
- Hartmut Lutz, professor of American and Canadian studies at the University of Greifswald, Germany
- Hartmut Möllring, German politician (German Christian Democratic Union)
- Hartmut Mehdorn (born 1942), German manager and current CEO of Deutsche Bahn AG
- Hartmut Michel, German biochemist and Nobel Laureate
- Hartmut Nassauer (born 1942), German politician and Member of the European Parliament for Hesse
- Hartmut Neugebauer (born 1941), German actor, voice actor and dialogue director from Poznań, Poland
- Hartmut Neven (born 1964), scientist working in computational neurobiology, robotics and computer vision
- Hartmut Ostrowski (born 1958), CEO of Bertelsmann AG
- Hartmut Perschau, German politician (German Christian Democratic Union)
- Hartmut Pilch (born 1963), founded the Foundation for a Free Information Infrastructure or FFII
- Hartmut Schade (born 1954), former football player, who won the 1976 Summer Olympics
- Hartmut Schairer (1916–1942), highly decorated Hauptmann in the Luftwaffe during World War II
- Hartmut Schreiber (born 1944), German rower
- Hartmut Stegemann (1933–2005), German theologian, specialized in Dead Sea Scrolls research
- Hartmut Surmann (born 1963), Senior Researcher and Scientist at the IAIS
- Hartmut Weber (born 1960), retired West German sprinter who specialized in the 400 metres
- Hartmut Wekerle (born 1944), German medical scientist and neurobiologist
- Hartmut Wenzel (born 1947), German rower
- Hartmut Winkler (born 1953), Professor at the University of Paderborn in Germany
- Hartmut Zinser (born 1944), German scholar in religious studies, history of religions, and ethnology
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