"City of Angels" is a song by American rock band Thirty Seconds to Mars, featured on their fourth studio album Love, Lust, Faith and Dreams (2013). Written by lead vocalist Jared Leto, who co-produced the song with Steve Lillywhite, "City of Angels" was inspired by Leto's experience of living in Los Angeles with his family and was influenced by the city's culture. Imbued with elements of synthrock as well as music from the 1980s, the track was cited as an example of the album's variety and experimentation. It was one of the first songs to be written for Love, Lust, Faith and Dreams, but required a long period of time to record.

Thirty Seconds to Mars is an American rock band from Los Angeles, California, formed in 1998. The band consists of brothers Jared Leto and Shannon Leto. During the course of its existence, it has undergone various line-up changes with the Leto brothers being the only consistent members.