Alexandra Paul is an American actress. She is probably best known for her role as Lt. Stephanie Holden in the television series Baywatch from 1992–97. She has starred in over 60 movies and television programs.

Paul was born in New York City, the daughter of Sarah, a social worker, and Mark Paul, an investment banker. Paul is married to triathlon coach Ian Murray and has competed in triathlons.

She has an identical twin sister, Caroline Paul, who became one of the first women to join the San Francisco Fire Department and has written a memoir entitled Fighting Fire: A Personal Story about her experiences.

Apart from Baywatch, Paul is known for movies such as Christine (1983), based on the book by Stephen King; the bicycle-racing film American Flyers (1985) with Kevin Costnerand the film version of the classic television series Dragnet starring Tom Hanks and Dan Aykroyd She has also hosted non-fiction TV shows, including WE's Winning Women and a southern California local environmentalism show, Earth Talk Today.

Paul co-wrote and co-produced two documentaries: Jampacked, a documentary on the world population crisis, and The Cost of Cool: Finding Happiness in a Materialistic World. Jampacked received a Bronze Apple Award and first place recognition at the EarthVision Environmental Film and Video Festival. The Cost of Cool won a CINE Golden Eagle Award.

Paul is one of only two leading Baywatch actresses without breast enlargements. Her character was a competitive swimmer and Olympic swim coach, mirroring her own real-life athletic interests.

She made a cameo appearance in Borat in a deleted scene parodying her Baywatch role.

Paul is co-starring in Tru Loved (2008) and is currently filming a feature film Family of Four, written and directed by John Suits.

Paul is a competitive endurance athlete. She competed at the 1997 Ironman Triathlon in Hawaii, a grueling 2.44 mile swim, 112 mile bike ride, and 26.2 mile marathon, which she completed in 13:18:52. In 2004, Alexandra competed in the Bonaire 10k race, a 6 mile swim off the island of Bonaire. In 2006, she raced in the Maui Channel Crossing, a 10 mile swim from the Hawaiian island of Lanai to Maui.

Paul is a dedicated environmental and political activist. In 2005, she was named "Activist of the Year" by the ACLU of Southern California. She avidly recycles, and will not use any products tested on animals. She has traveled to Nicaragua with a medical aid group and to South Africa to register voters, and has been registering voters locally every Wednesday night for the past eighteen years. The United Nations honored her in 1997 for her environmental work.

She has often committed herself to civil disobedience to protest against some policy or action that she believes is wrong. She has been arrested over a dozen times at the Nevada Nuclear Test site in peaceful protests. On March 19, 2003 she was arrested for trespassing onto federal property during a protest against the Iraq war and spent 5 days in jail.