Cassidy Freeman (born April 22, 1982 in Chicago, Illinois) is an American actress and musician. She is best known for her role as Tess Mercer in The CW's superhero drama Smallville and Cady Longmire in Longmire.
Cassidy was born to prominent Chicago-area attorneys, who also own a cattle ranch in Montana. She is the youngest of three children with two brothers, voice actor Crispin Freeman and musician Clark Freeman. Cassidy graduated from The Latin School of Chicago and then Magna Cum Laude from Middlebury College in 2005 with degrees in Theater and Spanish. Cassidy, her brother, Clark Freeman, and Andy Mitton formed the band called "The Real D'Coy", where she sings and plays piano.