Adrianne Palicki (b. May 6, 1983, Toledo, Ohio) is an American actress who currently stars as Tyra Collette on the NBC television series Friday Night Lights.

She appeared in the Aquaman-based WB pilot Mercy Reef as an evil siren, but the pilot was not picked up for series by the CW network, a result of The WB and UPN network merger, which occurred while the pilot was being filmed.

Other television credits include Smallville as Kara in the season 3 finale ("Covenant"). Palicki also starred in Supernatural as Jessica Moore, Sam Winchester's doomed girlfriend, killed by a demon, in its pilot episode. The character reappears in the Supernatural season 2 episode, "What is and What Never Should Be".