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

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
• 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

Religious leaders

• Geoffrey Claussen, American rabbi

Scientists

• Claus-Frenz Claussen (born 1939), German neurotologist
• Peter Claussen (fl. nineteenth century, dates unclear), also known as Pedro Cláudio Dinamarquez (Peter) Clausen, Danish natural history collector

Businesses

• Claussen pickles
• Claussen and Claussen, architecture firm

Sites

• Claussen's Bakery, historic site
• Claussen House, historic site in Florence, South Carolina
• William Claussen House, historic site in Davenport, Iowa

See also

• Clausen