Altmann or Altman may refer to:
The Altmann was an automobile made by Kraftfahrzeug-Werke GmbH, Brandenburg/Havel from 1905 to 1907. It was one of only a handful of German steam car makes, and was quite advanced for the era. Its valve timing engine allowed it to follow the Gardner-Serpollet principle, though the engine differed from that design in other aspects. Its three cylinders allowed it to produce . Its use of a condensation system and ensuing low consumption of water gave it an effective range of around on a single tank of water. The death of its designer, Adolf Altmann, prevented it from being built on a large scale. The firm later went on to build electric cars.
The Altmann is a mountain in the Appenzell Alps, located on the border between the cantons of Appenzell Innerrhoden and St. Gallen. It is situated in the massif of the Alpstein north of Wildhaus (St. Gallen), a few kilometres from the Säntis.
The Altmann is a steep limestone tower, which rises about 1000 metres over the valleys of the Alpstein. The normal route starts at Rotsteinpass (2,120 metres) on the north-west side and is considered an easy climb.
Altmann is a surname. Notable people with the surname include:
- Alexander Altmann (1906–1987), Hungarian-American professor of Judaic studies
- Dora Altmann (1881–1971), German actress
- Elisabeth Altmann-Gottheiner (1874–1930), the first female German University lecturer
- Gila Altmann (born 1949), German politician and member of the Green Party
- Maria Altmann, the plaintiff in Republic of Austria v. Altmann
- Richard Altmann (1852–1900), German pathologist
- Ros Altmann, British pensions campaigner
- Wilhelm Altmann (1862–1951), German historian