Ulrich Thomsen (born 6 December 1963) is a Danish actor and filmmaker, known for his role of Christian in the 1998 film The Celebration and for the role of Kai Proctor in the Cinemax original series Banshee (2013–2016).

Ulrich Thomsen was born in (Næsby) Odense, Denmark and graduated from the Danish National School of Theatre and Contemporary Dance in 1993, after which he performed in several theatres in Copenhagen, such as Dr. Dantes Aveny, Mungo Park and Østre Gasværks Teater.

[1] Aside from his native language Danish, Thomsen is fluent in German and English.

In 2009, he played Jonas Skarssen, the lead villain in Tom Tykwer's The International.

From 2013 to 2016, he starred as series regular in Banshee playing the role of primary antagonist, Kai Proctor.