Hans Decker
Hans Decker is the name of the following people:
- Hans Decker (stonemason) (15th century), German stonemason
- Hans Decker (singer) (1903–1980), German tenor and organist
- Hans-Helmut Decker-Voigt (* 1945), German scientist and publicist
- Hansmartin Decker-Hauff (1917–1992), German historian and genealogist
- Hans W. Decker (* 1929), German lawyer, economist and finance scientist (head of Siemens USA), university professor in the USA