Imhoff or Imhof is a German surname. Notable people with the surname include:
Imhoff family, one of the oldest patrician families in the German city of NurembergBerthold Imhoff (1868–1939), German-Canadian painterClaudia Imhoff, American management consultant and writerDaniel Imhof (born 1977), Canadian footballerDarrall Imhoff (born 1938), American former professional basketball playerDominic Imhof (born 1982), Canadian footballer, brother of Daniel ImhofEduard Imhof (1895–1986), Swiss professor of cartographyFloris van Imhoff (born 1964), Dutch curlerFritz Imhoff (1891–1961), Austrian actorGary Imhoff (born 1952), American actorGuillermo Imhoff (born 1982), Argentine footballerGustaaf Willem van Imhoff (1705–1750), governor of Ceylon and then the Dutch East Indies for the Dutch East India CompanyHans Imhoff (1922–2007), German industrialist and businessmanHans Walter Imhoff (1886–1971), Swiss footballerJoseph Imhoff (1871–1955), American painterJuan José Imhoff (born 1988), Argentine rugby playerKarl Imhoff (1876–1965), German engineer and inventor of the Imhoff tank for sewage processingLawrence E. Imhoff (1895–1988), soldier, lawyer, and four-term U.S. Representative from OhioMartin Imhof (born 1949), American football player who played defensive end in the National Football LeagueMaximus von Imhof (1758–1817), German physicistRoger Imhof (1875–1958), American actor and vaudeville and burlesque performerSigmund von Imhoff (1881–1967), Generalmajor in the German military during the Second World War