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- "Off Broadway" by George Benson
- "Off Broadway" by Ryan Adams
- "Oh Oh I Love Her So" by Ramones
- "Old Man Harlem" by Hoagy Carmichael and Rudy Vallée (covered by The Dorsey Brothers, Dave Frishberg, Ethel Waters, and others)
- "Old Manhattan Melodies" by Gary Brooker
- "Old New York" by Luke Temple
- "Old School" by 2pac
- "Old Soul Song (For the New World Order)" by Bright Eyes (about the anti-war protests held in New York City on February 15th, 2003)
- "The Oldest Established" by Frank Loesser from the 1950 musical Guys and Dolls
- "On Broadway" by Barry Mann & Cynthia Weil with Jerry Leiber and Mike Stoller, for The Drifters (1963), also performed by George Benson and many others
- "On Broadway Tonight" by The Four Seasons
- "On My Way to Harlem" by Coolio
- "On the Drag" by They Might Be Giants
- "On The Streets Of The Bronx" by The Moonglows
- "On the Subway" by The Last Poets
- "Once Upon A Time In New York City" by Huey Lewis from the 1988 Disney movie Oliver & Company
- "One Day You'll Dance For Me New York City" by Thomas Dybdahl
- "One More Night In Brooklyn" by Justin Townes Earle
- "One Night In New York" by Gene Farrow
- "One Night in NYC" by The Horrorist
- "Only In New York" by Jeanine Tesori and Dick Scanlan from the musical Thoroughly Modern Millie
- "The Only Living Boy in New York" by Simon & Garfunkel and covered by Everything but the Girl
- "Our Lady of the Bronx" by Black 47
- "Our little tree in the park" by written by Rodgers and Hart
- "Out of Habit" by Ani Difranco
Read more about this topic: List Of Songs About New York City