Cassidy Freeman (born April 22, 1982) is an American actress and musician. She is known for her roles as Tess Mercer in The CW's superhero drama Smallville, Amber Gemstone in the HBO series The Righteous Gemstones, and Cady Longmire in A&E's modern western Longmire.

Early life and education
Freeman was born in Chicago, Illinois, to prominent Chicago-area attorneys Glynna and Lee Freeman, who also own a cattle ranch in Montana. She is the youngest of four children, with three brothers, two of whom are voice actor Crispin Freeman and musician Clark Freeman. Her third brother Ryan is adopted. Her father is Jewish. Her mother has German, English, Scottish, and Irish ancestry.

Freeman graduated from The Latin School of Chicago, and then magna cum laude from Middlebury College in 2005 with degrees in theater and Spanish.