While she was in college, she was an Irene Ryan Acting Award finalist and was selected to perform at the Kennedy Center.
Is of German descent and is a first cousin many times removed of Metacomet though his father Massasoit's sister.
Sister of Eli Giddish, daughter of Charles Giddish and wife Nita. Her paternal grandfather Ralph L. Giddish (Georgia, ca. 1923) enlisted in the United States Army on March 18, 1943 and was a World War II Veteran and nudged her interest in acting along by taking her to the Fox Theater. Her maternal grandmother Dosia Hildebrand was very supportive of her interests.
Kelli Giddish moved to New York after graduation and made her debut in "Shoes.".
Graduated from the University of Evansville in Indiana where she majored in Theatre Performance.