Gary Portnoy (born June 1956) is an American musician and singer-songwriter from the state of New York best known for co-writing and singing the theme song for Cheers, "Where Everybody Knows Your Name". In addition to co-writing both songs with Judy Hart Angelo, the two also co-authored the theme to the long-running television series, Mr. Belvedere.
Portnoy also wrote several songs for the NBC television series, Fame, including the Emmy-nominated track for Best Original Song, I Still Believe In Me (co-written by Susan Sheridan) as well as It's Gonna Be a Long Night (co-written by Estelle Levitt). Both songs were featured on the 1982 album, The Kids From "Fame". Portnoy also received an Emmy nomination for the Cheers theme, as well as six consecutive ASCAP awards during the 1980s for the Most Performed Television Themes of the year.
In 2004, after a hiatus from the music business during the 1990s, Portnoy released the 12-track album Keeper which includes the full-length version of Where Everybody Knows Your Name. In 2007, he followed with the release of the autobiographical 12-track album, Destiny, which contains a full-length version of the theme song for Mr. Belvedere (whose original version was sung by Leon Redbone). In 2010, Portnoy released the 12-track album, Songs Along The Way, which includes 11 newly penned compositions as well as the demo version of the Cheers theme song.