theisen

Theisen is a surname. Notable people with the surname include:

• Brianne Theisen (born 1988), Canadian heptathlete and women's pentathlete
• Christopher Theisen (born 1993), German footballer
• Dave Theisen (1941–2014), American football player
• Jerome Theisen (1930–1995), American Benedictine monk
• Joseph M. Theisen (1877–1946), American politician
• Mary Theisen-Lappen (born 1990), American weightlifter
• Matthias Theisen (1833–1923), American politician
• Oscar Theisen (1897–?), Luxembourgish wrestler
• Paul Theisen (born 1922), Danish fencer
• Rasmus Theisen (1837–1908), Norwegian civil servant and politician
• Roger Theisen (1932–2024), Luxembourgian fencer
• Vidar Theisen (1933–2012), Norwegian meteorologist
• William Theisen, American restauranteur