Connie Inge-Lise Nielsen (b. July 3, 1965, in Copenhagen, Denmark) is a Danish actress.

At the age of 10, Nielsen moved with her family to a small seaside village named Elling in Frederikshavn. Her first acting experience came when she was 15 years old, in a cabaret written by her mother. When she turned 18, she traveled to Paris, France, Rome, Milan, South Africa and New York in order to pursue her acting career. She studied and worked to support herself during her travels.

After a few minor roles, Nielsen's big break came in 1997 with the movie Devil's Advocate, starring Al Pacino and Keanu Reeves. She has since starred in a few notable American films, including Gladiator (2000) and One Hour Photo (2002).

Connie has a son named Sebastian, with whom she now lives in New York. She is currently dating Metallica drummer Lars Ulrich.

Nielsen is fluent in Danish, German, English, Swedish, French and Italian; she is also a singer and dancer. She is said to own around 200 pairs of sunglasses.