'''Claussen''' is a surname. Notable people with the surname include:
==Athletes== *Brandon Claussen (born 1979), American baseball player *Georg Claussen (1895–1967), Danish cyclist *Hans Claussen (1911–2001), German weightlifter *Simon Claussen (born 1991), Norwegian sport shooter
==Artists== *Amalie Claussen (1859–1950), Danish photographer *Gro Pedersen Claussen (born 1941), Norwegian graphic designer *James Claussen, American lithographer and painter *Sophus Claussen (1865–1931), Danish poet
==Performers== *Frank Claussen (born 1976), Norwegian guitarist *Julia Claussen (1879–1941), Swedish mezzo-soprano
==Political figures== *Andreas Claussen (1883–1957), Norwegian barrister, civil servant and politician *Bruno Claußen (1884–?), German lawyer, civil servant and business executive *Claus Christian Claussen (born 1961), German politician (CDU) *Eileen Claussen (born 1945), President of the Center for Climate and Energy Solutions *George C. Claussen (1882–1948), Justice of the Iowa Supreme Court *Otto Claussen Iberri (born 1964), Mexican politician *Peter H. Claussen (1894–1990), American politician from Nebraska
==Religious leaders== *Geoffrey Claussen, American rabbi *{{ill|Johann Hinrich Claussen|de}} (born 1964), German Protestant theologian, church cultural representative, and author
==Scientists== *Claus-Frenz Claussen (1939–2022), German neurotologist
==Businesses== *Claussen pickles *Claussen and Claussen, architecture firm
==Sites== * Claussen's Bakery, historic site in Columbia, South Carolina * Claussen House, historic site in Florence, South Carolina * William Claussen House, historic site in Davenport, Iowa
==See also== *Clausen
{{surname|Claussen}}