James Lance Bass (born May 4, 1979) is an American pop singer, actor, film and television producer, and author. He grew up in Mississippi and rose to fame as the bass singer for the American pop boy band 'N Sync. 'N Sync's success led Bass to work in film and television. He starred in the 2001 film On The Line, which his company, Bacon & Eggs, also produced. Bass later formed a second production company, Lance Bass Productions, as well as a now-defunct music management company, Free Lance Entertainment, a joint venture with Mercury Records.

After completion of 'N Sync's Pop Odyssey Tour, Bass moved to Star City, Russia in much publicized pursuit of a seat on a Soyuz space capsule. Bass was certified by both NASA and the Russian Space Program after several months of cosmonaut training, and planned to join the TMA-1 mission to the International Space Station. However, after his financial sponsors backed out, Bass was denied a seat on the mission.

In July 2006, Bass revealed that he is gay in a cover story for People magazine. He was awarded the Human Rights Campaign Visibility Award in October 2006, and released an autobiography, Out of Sync, in October 2007, which debuted on The New York Times Best Seller list.