Sasha Embeth Pieterse (born Johannesburg, South Africa, February 17, 1996) is a child actress.

Pieterse started acting in 2002, when she was given a role as one of the Davis children on the Warner Brothers's canceled remake of the popular show Family Affair. In 2004, she appeared in Stargate SG-1 as well as Fox's House. In 2005, she appeared in her first film The Adventures of Shark Boy and Lava Girl. She appeared in a short-lived series called Wanted with her former Family Affair co-star, Gary Cole.

Pieterse is an only child. She is home-schooled and wishes to complete studies early to pursue her acting career. Her interests include chatting with her friends, Taylor Dooley and Taylor Lautner, and singing and dancing.

At 6 years old, Sasha Pieterse got her start in television, co-starring as "Buffy" on The WB comedy series "Family Affair" (2002), opposite Gary Cole (I). She now returns to series television playing Cole's daughter on "Wanted" (2005). Born in Johannesburg, South Africa and raised in Las Vegas before moving to Los Angeles, this 9-year-old grew up around show business. Her parents were professional dance partners who performed all over the world, and Pieterse loved being on stage with them. She soon met with an agent who quickly signed her, and she's been busy acting and modeling ever since. Pieterse has appeared in numerous television commercials including long-running national spots for "Nesquick" and "Firestone Tires". She was featured on a billboard for "Supercuts" that appeared throughout the country and more recently, sang and modeled in the Macy's Passport Fashion Show, performing throughout California. On television, she has also guest starred as "Grace" on the SciFi series "Stargate SG-1" (1997). Pieterse will next be seen as the "Ice Princess" in Robert Rodriguez (I)'s (Spy Kids) soon-to be-released feature film Adventures of Sharkboy and Lavagirl 3-D, The (2005), with George Lopez (I). Besides acting, Pieterse loves to sing. When she is not acting or singing, you can find her horseback riding, dancing, playing the piano, and golfing with her dad. She lives in Los Angeles with her mom and dad, and her Pekinese dog named Precious, Persian cat named Pasha and a fish named Crystal.