"I Don't Know Why You Don't Want Me" is a song co-written and recorded by American country music artist Rosanne Cash.

It was released in February 1985 as the first single from the album Rhythm & Romance.

The song was Cash's fourth number one on the country charts.

[1] Cash wrote the song with then-husband Rodney Crowell.

In 1986, the song - which was written by Cash in response to losing a Grammy to Juice Newton in 1983 - garnered Rosanne Cash her first Grammy Award.