"Ain't No Mountain High Enough" is a 1967 song performed by American singers, Marvin Gaye and Tammi Terrell. The song was written by Nickolas Ashford and Valerie Simpson and produced by Harvey Fuqua and Johnny Bristol. The song became a hit and has since become a classic soul and Motown song, with numerous cover versions by various artists. The song's powerful message of love and support has made it a popular choice for weddings, movies, and TV shows.