"Gonna Fly Now", also known as "Theme from Rocky", is the theme song from the movie Rocky, composed by Bill Conti with lyrics by Carol Connors and Ayn Robbins, and performed by DeEtta West and Nelson Pigford. Released in February 1977 with the movie Rocky, the song became part of American popular culture after main character Rocky Balboa as part of his daily training regimen runs up the 72 stone steps leading to the entrance of the Philadelphia Museum of Art in Philadelphia and raises his arms in a victory pose, while the song plays. The song was written in Philadelphia. The song is also often played at sporting events, especially at sporting events in the city of Philadelphia or featuring sports teams from there.

The song (whose lyrics are only 30 words long) was nominated for an Academy Award for Best Original Song in the 49th Academy Awards. The version of the song from the movie, performed by Conti with an orchestra, hit number one on the Billboard Hot 100 chart in 1976, while a version by jazz trumpeter Maynard Ferguson hit the top 30. Disco versions by Rhythm Heritage and Current were on the chart at the same time (Conti's own version reveals some early disco influence in the orchestration). Billboard ranked Conti's version as the No. 21 song of 1976. Conti's single was certified Gold by the RIAA, for shipments exceeding one million in the United States. The American Film Institute placed it 58th on its AFI's 100 Years... 100 Songs list. Due to its charting success, in a rarity for a movie soundtrack, "Gonna Fly Now" is on the regular playlist on '70s on 7 on Sirius XM Radio.

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