Rachael Perrell Fosket is an American actress originally from Wendall, Massachusetts. She is best known for her role in Roland Emmerich's film Midway (2019), TNT's The Librarians (2013), NBC's Grimm (2011), and IFC's Portlandia (2011) and Documentary Now! (2015). In 2020, she was part of the remake of a comedy horror classic, The Brain That Wouldn't Die (2020).

She has studied at The Groundlings School, Scott Rogers Studios, John Homa Productions, and The Markland Studio.