Mariska Magdolna Hargitay is an American actress, philanthropist, producer, and director. Hargitay has played Olivia Benson on NBC's Law & Order: Special Victims Unit since 1999; Benson is the longest-running character of all time in an American primetime drama. Her accolades for the role include an Emmy and a Golden Globe. In 2013, she received a star on the Hollywood Walk of Fame.
Hargitay was born in Santa Monica, California, and is a daughter of actress Jayne Mansfield. She attended Marymount High School in Los Angeles and enrolled in the UCLA School of Theater, Film and Television, leaving before completing her degree to pursue acting. Her other credits include the series Falcon Crest and In the Heat of the Night (both 1988), Tequila and Bonetti (1992), Can't Hurry Love (1995–1996), and ER (1997–1998).
Outside of acting, Hargitay co-produced the HBO documentary I Am Evidence (2017), winning a News and Documentary Emmy for the project. In 2025, she launched the production company Mighty Entertainment, under which she directed the documentary My Mom Jayne. Hargitay founded the Joyful Heart Foundation, which provides support to people who have been sexually abused.