"Let's Hang On!" is a song composed by Bob Crewe, Sandy Linzer, and Denny Randell that was popularized by the Four Seasons in 1965.

In 1981, the song was revived by Barry Manilow who hit No. 6 on the U.S. Billboard Adult Contemporary chart and No. 32 on the Hot 100.

The single climbed to No. 12 in the United Kingdom and was certified silver, while peaking at No. 4 in Australia, No. 16 in Germany and No. 8 in Ireland.