Which Johnny Cash and June Carter song won a Grammy in 1968?

The Johnny Cash and June Carter song that won a Grammy in 1968 was "Jackson."

Written by Billy Edd Wheeler and Jerry Leiber, "Jackson" tells the story of a married couple whose relationship has lost its spark. The husband imagines traveling to Jackson to enjoy freedom and attention, while the wife answers that she will be there to watch him fail. Wheeler later said he chose the word "Jackson" for its sharp sound rather than because he had one particular city in mind.

Cash and Carter recorded their version in January 1967 and released it in February on the album Carryin' On with Johnny Cash and June Carter. Their recording reached No. 2 on the U.S. country chart and won the 1968 Grammy Award for Best Country & Western Performance Duet, Trio or Group.

The song is often linked with the couple's romantic partnership, but it was not written specifically for them. Other options were also Cash collaborations: "It Ain't Me Babe" was a Cash and Carter recording, "Ring of Fire" was strongly associated with Cash, and "If I Were a Carpenter" later won the couple a Grammy in 1971.