Anna Sergeyevna Kournikova is a Russian professional tennis player. Kournikova's professional tennis career has been curtailed for the past several years, and possibly ended, by serious back and spinal problems. She currently is the new trainer, replacing Jillian Michaels, on the television show The Biggest Loser.

Kournikova started dating pop star Enrique Iglesias in late 2001 when she appeared in his video, "Escape." Kournikova herself has consistently refused to directly confirm or deny the status of her personal relationships. In an interview with Graham Norton in 2010, Kournikova confirmed that she and Iglesias have been together for over eight years but have no plans to marry in the near future.