"Just My Imagination (Running Away with Me)" is a 1971 number-one hit single released on the Gordy (Motown) label, recorded by The Temptations and produced by Norman Whitfield. The second single from their 1971 Sky's the Limit album, "Just My Imagination" was the third of four Temptations songs to go to number one on the Billboard Hot 100 in the United States. The single held the number-one position on the Billboard Pop Singles Chart for two weeks in 1971, from March 27 to April 10, replacing "Me and Bobby McGee" by Janis Joplin, and replaced by "Joy to the World" by Three Dog Night. "Just My Imagination" also held the number-one spot on the Billboard R&B Singles chart for three weeks, from February 27 to March 20, replacing "Jody's Got Your Girl and Gone" by Johnnie Taylor, and replaced by another Motown single, "What's Going On" by Marvin Gaye. Rolling Stone magazine listed "Just My Imagination" as number 389 on their list of the 500 Greatest Songs of All Time.

Today, "Just My Imagination" is considered one of the Temptations' signature songs, and is notable for recalling the sound of the group's 1960s recordings. It is also the final Temptations single to feature founding members Eddie Kendricks and Paul Williams. During the process of recording and releasing the single, Kendricks departed from the group to begin a solo career, while the ailing Williams was forced to retire from the act for health reasons.