Tracy Spiridakos is a Canadian actress, best known for starring as Detective Hailey Upton in the hit Dick Wolf series "Chicago P.D." for more than 7 seasons.

Spiridakos was born in Winnipeg, Manitoba, to Greek-born parents. The family moved to the Greek town Skala, near Sparta, when she was four, and returned to Canada when she was nine. She strongly identifies with her Greek heritage and speaks fluent Greek. She graduated from Oak Park High School in Winnipeg in the year 2000.