Johnny Gavin (Rescue Me)

Infobox character | colour =
name = Johnny Gavin
portrayer = Dean Winters
creator = Denis Leary and Peter Tolan
first = Gay (Season One, Episode Two)
last = Hell (Season Three, Episode Twelve)
cause of death = Murdered in Stakeout
occupation = Detective for NYPD
title =
familly = Tommy Gavin (brother), Michael Gavin (father), Teddy Gavin (uncle), Maggie Gavin (sister), Jimmy Keefe (cousin)
spouse = Angie (divorced)
children = Two daughters, one in reform school
relatives =
footnotes =

Johnny Gavin was a fictional character on the FX drama series "Rescue Me". The character was played by Dean Winters.

Johnny is Tommy's younger brother. He is a well-connected detective in the NYPD, who reluctantly helps Tommy out in terms of getting him out of trouble with the law and providing information to Tommy when asked. He has an ex-wife named Angie (Marisa Tomei) and two daughters, who have not been seen in the series. It is mentioned that one of the daughters is in reform school. During the first season, Johnny helps Tommy (Denis Leary), mess with Janet's new boyfriend during her separation from Tommy by arranging for his car to be repossessed and his credit cards to be canceled. Johnny encourages Tommy to call their father, Michael Gavin (Charles Durning), especially after Michael separated from their mother. Eventually, Michael returned home, but she died shortly after. Johnny also attempts to help Tommy locate Janet and Tommy's kids when she moves them out of New York at the end of the first season.

As the show progressed, the character becomes more and more openly resentful towards Tommy and having to clean up his brother's messes, which is coupled with the fact that Johnny has been carrying an unrequited crush for Janet for years.

After a short-lived reconciliation between Tommy and Janet, their only son Connor was killed by a drunk driver. Janet (Andrea Roth) moved out with their two daughters at the end of the second season. At the request of Tommy, Johnny began to look after Janet. The two started an affair, which was revealed at the end of the first episode of the third season. Tommy subsequently found out about the relationship and delivered a brutal beating to his brother at their father's 83rd birthday party. Johnny eventually reveals to Tommy that Janet is pregnant, but he has no idea that Janet has cheated on him with Tommy. Soon after, Johnny is shot three times in the back during a stakeout and is killed. This incident devastates Tommy, who had not yet reconciled with Johnny, but eventually was able to forgive him postmortem.

Tommy has had a vision of Johnny's ghost in the fourth season, but only for a brief flash.

Johnny was a recurring character in the first two seasons before becoming a regular in the third season.