Vincent Paul Kartheiser is an American actor. He played Pete Campbell on the AMC television series Mad Men, and had starring roles in the 1990s films Alaska, Masterminds, and Another Day in Paradise. Kartheiser also played Connor on The WB television series Angel and Dr. Jonathan Crane in the third season of the HBO series Titans.

Luxembourger Americans are Americans of Luxembourgish ancestry. According to the United States' 2000 census, there were 45,139 Americans of full or partial Luxembourgish descent. In 1940, the number of Americans with Luxembourgish ancestry was around 100,000.