"I'm Leaving It Up to You" is a song written by and originally performed by Don Harris and Dewey Terry in 1957.

[2] It was later popularized in 1963 by the American duo Dale and Grace, who took it to #1 on the Billboard Hot 100 chart.

Their version became a #1 hit in the United States on the Billboard Hot 100 for two weeks in late 1963, replacing "Deep Purple" by Nino Tempo & April Stevens but ending up one position lower than that record on the 1963 end-of-the-year chart.

It was the #1 song on the Billboard Hot 100 chart when President John F. Kennedy was assassinated in Dallas, Texas.

The duo was scheduled to perform that night as part of Dick Clark's Caravan of Stars (with Bobby Rydell, Jimmy Clanton, and Brian Hyland) and had waved to the president's motorcade from a vantage point near their hotel, moments before the assassination.