Harold Francis "Dirty Harry" Callahan is a fictional San Francisco police detective in the Dirty Harry film series, encompassing Dirty Harry (1971), Magnum Force (1973), The Enforcer (1976), Sudden Impact (1983), and The Dead Pool (1988). Callahan is portrayed by Clint Eastwood in each movie.

From his debut, Callahan became the template for a new kind of movie cop: someone who does not hesitate to cross professional and ethical boundaries in pursuit of his own vision of justice, especially when the law is poorly served by an inept bureaucracy. The "Dirty Harry" archetype does not shy away from killing; all of the Dirty Harry films feature Callahan killing criminals. His rationale for such conduct is that it is done with the greater good in mind: protecting the innocent and victims of crime. Callahan's methods are rarely endorsed by his superiors, who on various occasions have demoted, suspended or transferred him to other departments.

Harry Callahan may refer to:

Clinton "Clint" Eastwood, Jr. (born May 31, 1930) is an American film actor, director, producer, composer and politician. Eastwood first came to prominence as a supporting cast member in the TV series Rawhide (1959–1965). He rose to fame for playing the Man with No Name in Sergio Leone's Dollars trilogy of spaghetti westerns (A Fistful of Dollars, For a Few Dollars More, and The Good, the Bad and the Ugly) during the late 1960s, and as Harry Callahan in the Dirty Harry films (Dirty Harry, Magnum Force, The Enforcer, Sudden Impact, and The Dead Pool) throughout the 1970s and 1980s. These roles, among others, have made him an enduring cultural icon of masculinity.

For his work in the films Unforgiven (1992) and Million Dollar Baby (2004), Eastwood won Academy Awards for Best Director and Producer of the Best Picture, as well as receiving nominations for Best Actor. These films in particular, as well as others including Play Misty for Me (1971), Thunderbolt and Lightfoot (1974), The Outlaw Josey Wales (1976), Escape from Alcatraz (1979), Tightrope (1984), Pale Rider (1985), Heartbreak Ridge (1986), In the Line of Fire (1993), The Bridges of Madison County (1995), and Gran Torino (2008), have all received commercial success and critical acclaim. Eastwood's only comedies have been Every Which Way but Loose (1978) and its sequel Any Which Way You Can (1980), which are his two most commercially successful films after adjustment for inflation.

Frank Drebin (full title Sergeant Frank Drebin, Detective Lieutenant Police Squad) is a fictional character in the Police Squad! series and the Naked Gun movies played by Leslie Nielsen. In 2008, Frank Drebin was selected by Empire Magazine as one of The 100 Greatest Movie Characters of All Time. He was also named by UGO.com as one of The 100 Best Heroes of All Time.

Frank Drebin is a member of Police Squad, a special department of the police force, where he served for many years. He is known for being a bumbling fool, causing lots of problems, often more than he solves, but being entirely oblivious to it all. He works under police Captain Ed Hocken (Alan North/George Kennedy). In Police Squad, he works with Norberg (Peter Lupus). In the Naked Gun series, he works with Nordberg (O.J. Simpson).

He and Ted Olson (scientist) are the only characters that appeared in both Police Squad! and the Naked Gun films and were portrayed by the same actor.