"Tangled Up in Blue" is a song by American singer-songwriter Bob Dylan, which was released as the opening track of his 15th studio album Blood on the Tracks (1975). The song was written by Dylan and produced by David Zimmerman, Dylan's brother. Released as a single, it reached No. 31 on the Billboard Hot 100. The song concerns relationships and contains different narrative perspectives. Dylan has altered the lyrics in subsequent performances, changing the point of view and details in the song.

Blood on the Tracks is the fifteenth studio album by American singer-songwriter Bob Dylan, released on January 20, 1975, by Columbia Records. The album marked Dylan's return to Columbia after a two-album stint with Asylum Records. Dylan began recording the album at an A & R studio in New York City in September 1974. In December, shortly before Columbia was due to release the album, Dylan abruptly re-recorded much of the material in Sound 80 studio in Minneapolis. The final album contains five tracks recorded in New York and five from Minneapolis. The album’s songs have been linked to tensions in Dylan's personal life, including his estrangement from his then-wife Sara. One of their children, Jakob Dylan, has described the songs as "my parents talking." In interviews, Dylan has denied that the songs on the album are autobiographical.