Dame Helen Lydia Mirren, (née Mironoff; born 26 July 1945) is an English actor. Mirren began her acting career with the Royal Shakespeare Company in 1967, and is one of the few performers who have achieved the Triple Crown of Acting. She won the Academy Award for Best Actress in 2007 for her performance as Queen Elizabeth II in The Queen and received the Olivier Award for Best Actress and Tony Award for Best Actress in a Play for the same role in The Audience.

Mirren's other Academy Award nominations include The Madness of King George (1994), Gosford Park (2001), and The Last Station (2009). For her role as police detective Jane Tennison on the British television series Prime Suspect, which ran from 1991 to 2006, she won three consecutive BAFTA Awards for Best Actress between 1992 and 1994 and two Emmy Awards. She also received another Emmy Award and a Golden Globe Award for her performance in the miniseries Elizabeth I (2005).

Some of her other notable film roles include Marcella in the 1984 film Cal, for which she won the Cannes Film Festival Award for Best Actress, 2010 (1984), The Cook, the Thief, His Wife & Her Lover (1989), Teaching Mrs. Tingle (1999), Calendar Girls (2003), Hitchcock (2012), The Hundred-Foot Journey (2014), Woman in Gold (2015), Trumbo (2015), and The Leisure Seeker (2017). She played Victoria Winslow in the action-comedy films Red (2010) and Red 2 (2013).

In 2003, she was appointed a Dame Commander of the Order of the British Empire (DBE) for services to drama. In 2013, Mirren was awarded a star on the Hollywood Walk of Fame, and in 2014, BAFTA announced that Mirren would be the recipient of the Academy Fellowship.