Adam Beach is a Canadian actor. He is best known for his roles as Victor Joseph in Smoke Signals; Frank Fencepost in Dance Me Outside; Tommy on Walker, Texas Ranger; Kickin' Wing in Joe Dirt; U.S. Marine Corporal Ira Hayes in Flags of Our Fathers; Private Ben Yahzee in Windtalkers; Dr. Charles Eastman (Ohiyesa) in Bury My Heart at Wounded Knee; NYPD Detective Chester Lake in Law & Order: Special Victims Unit; and Officer Jim Chee in the film adaptations of Skinwalkers, Coyote Waits and A Thief of Time. He starred in the Canadian 2012–2014 series Arctic Air and played Slipknot in the 2016 film Suicide Squad. He also performed as Squanto in Disney's historical drama film Squanto: A Warrior's Tale. Most recently he has starred in Hostiles (2017) as Black Hawk and the Netflix original film Juanita (2019) as Jess Gardiner and Edward Nappo in Jane Campion's The Power of the Dog.

Detective Chester Lake is a fictional character played by Adam Beach in the American crime drama television series Law & Order: Special Victims Unit on NBC. Lake is the first detective of Native American descent on a Law & Order series. He is first seen during the eighth season working with the Brooklyn division of the New York Police Department's Special Victims Unit. At the end of the season, he transfers to the Manhattan SVU, where he is partnered with Fin Tutuola (Ice-T) during the ninth season. Lake is arrested in the season finale, "Cold", after he kills a fellow police officer.