Ettlinger is a German surname, deriving from Ettlingen, Germany. Notable people with the surname include:
- Adrian Ettlinger (1925âÂÂ2013), American electrical engineer and pioneer in television and video technology
- Elisabeth Ettlinger (1915âÂÂ2012), German-born Swiss archaeologist and academic
- Harry L. Ettlinger (1926âÂÂ2018), American engineer
- Jacob Ettlinger (1798âÂÂ1871), German rabbi and author, and one of the leaders of German Orthodoxy
- Leopold Ettlinger (1913âÂÂ1989), Warburg Institute historian of the Italian renaissance and UC Berkeley Art Department Chair, 1970âÂÂ80
- Marion Ettlinger (born 1949), photographer specializing in author portraits
- Max Ettlinger (1877âÂÂ1929), German psychologist