Adelaide Clemens (born 30 November 1989) is an Australian actress. She was nominated for a Logie Award in 2008 for her role in the television series Love My Way. In 2012, she played Valentine Wannop in BBC's novel adaptation Parade's End, alongside Benedict Cumberbatch. Clemens has also appeared in X-Men Origins: Wolverine, The Great Gatsby, and Silent Hill: Revelation 3D (as Heather Mason). From 2013-2016, she starred in the television series Rectify.
Clemens was born in Brisbane, Australia. The daughter of an English father, she lived as a child in Japan, France, and Hong Kong, where she attended the Hong Kong International School. When she was 12 years old, her family returned to live in Australia. She attended high school at the Queenwood School for Girls, in the Sydney suburb of Balmoral.
Clemens began working as an actress in Australian television while in high school. She guest-starred in a 2006 episode of Blue Water High as Juliet, and in 2007, she starred in the children's series Pirate Islands: The Lost Treasure of Fiji, as Alison. Clemens played Harper in the Showtime drama Love My Way that year, and was nominated for the Graham Kennedy Award for Most Outstanding New Talent at the 2008 Logie Awards for the role.