Tom Atkins (born November 13, 1935) is an American actor. He is known for his work in the horror and thriller film genres, having worked with writers and directors such as Shane Black, William Peter Blatty, John Carpenter, Fred Dekker, Richard Donner, Stephen King, and George A. Romero. He is also a familiar face to mainstream viewers, often playing police officers and tough authority figures and is perhaps best known for his role as Lt. Alex Diehl in The Rockford Files (1974–1977).

Atkins has appeared in numerous films including The Fog (1980), The Ninth Configuration (1980), Escape from New York (1981), Creepshow (1982), Halloween III: Season of the Witch (1982), Night of the Creeps (1986), Lethal Weapon (1987), Maniac Cop (1988), Two Evil Eyes (1990), Bob Roberts (1992), Striking Distance (1993), My Bloody Valentine 3D (2009), Drive Angry (2011), Encounter (2018), and Trick (2019).

Atkins has also appeared in numerous television series and films such as Hawaii Five-O (1975), Kojak: Flowers for Matty (1990), Walker, Texas Ranger (1993), Fortune Hunter (1994), Xena: Warrior Princess (1996), Homicide: Life on the Street (1998), Oz (2003), Law & Order: Criminal Intent (2003), The Jury (2004), The Last-Drive In with Joe Bob Briggs (2019), City on a Hill (2022), and Creepshow (2023).

Atkins initially had no desire to be an actor. His father worked in a steel mill in Pennsylvania and Atkins assumed that he would follow in his father's footsteps. He enlisted in the United States Navy and "noticed that the officers lived great, but that was only because they had gone to college," and so, after leaving the navy, Atkins enrolled in college where he met a girl who was involved in a theatre group. Atkins studied at Duquesne University in Pittsburgh and was a member of the Gamma Phi fraternity. He says: "I was in my 20s already when I got interested in acting and I liked it a lot."

Atkins began his career in stage plays both on-and-off Broadway, before moving to Los Angeles to pursue a career in film and television. His first movie role was in The Detective, which starred Frank Sinatra. Talking of his experience working on his first feature film – and with Sinatra – Atkins says: "It was great! It was intimidating and frightening and scary but Frank was great. He was very easy to work with. He didn't like to do a lot of takes. But then it's not like we were doing Shakespeare."

After appearing in TV series and movies, including portraying Lt. Alex Diehl in seasons 1 and 2 of The Rockford Files, Atkins began working within the horror and science fiction genres. He appeared in two films directed by John Carpenter: the 1980 ghost story The Fog and the 1981 science fiction thriller Escape from New York. His next role (this time a leading role) was the third installment of the Halloween franchise, the Carpenter-produced Halloween III: Season of the Witch (1982).

He completed further work with George A. Romero, appearing in three of the director's projects: the anthology Creepshow (1982), written by Stephen King; the anthology Two Evil Eyes (1990), based on tales by Edgar Allan Poe; and Bruiser (2000).^{[citation needed]}

He portrayed Detective Ray Cameron in the 1986 cult horror film Night of the Creeps, a role Atkins calls his very favorite. He tells Classic-Horror magazine "It was the most fun film I've ever worked on. It was a pure giggle from beginning to end. The director Fred Dekker was very young and very talented and he went on to do The Monster Squad afterwards. I think he wrote a terrific film that was kind of a big put-on of '50s horror. And I had great lines in that movie!"