Q: Context: Lana Maria Parrilla (born July 15, 1977) is an American actress. Parrilla is best known for her roles on television and radio. She was a regular cast member in the fifth season of the ABC sitcom Spin City from 2000 to 2001. She later starred in Boomtown (2002-2003), Windfall (2006), Swingtown (2008) and as Doctor Eva Zambrano in the short-lived medical drama Miami Medical (2010). She also played the role of Sarah Gavin during the fourth season of the Fox series 24 in 2005. In 2011, Parrilla began starring as The Evil Queen / Regina Mills in the ABC fantasy drama series, Once Upon a Time. In 2016 Parrilla won a Teen Choice Award for Choice Sci-Fi / Fantasy TV Actress.

Question: who plays the evil queen on once upon a time? Let's give stream of consciousness first:
The relevant sentence in the passage is: In 2011, Parrilla began starring as The Evil Queen / Regina Mills in the ABC fantasy drama series, Once Upon a Time. Therefore, the final answer is Lana Maria Parrilla.