Elizabeth Mitchell (born Elizabeth Joanna Robertson: March 27, 1970) is an American actress. She is known for her lead role as Juliet Burke on the ABC drama mystery series Lost (2006–2010). Mitchell also had lead roles on the television series V (2009–2010), Revolution (2012–14), and Dead of Summer (2016), as well as recurring roles as the Snow Queen on Once Upon a Time (2014) and Anna Volovodov on The Expanse (2018).
Mitchell also starred in numerous films, including Gia (1998), Frequency (2000), Nurse Betty (2000), The Santa Clause 2 (2002), The Santa Clause 3: The Escape Clause (2006), Running Scared (2006), Answers to Nothing (2011), and The Purge: Election Year (2016).
She is also known as Elizabeth Joanna Mitchell, Elizabeth Mitchell Lopez Padilla, Elizabeth Joanna Robertson and Mitchell, Elizabeth.