Mary Sharon Vaughn (born May 2, 1947) is an American musician, songwriter and producer who was previously based in Sweden. She has written hits for artists such as Willie Nelson, Waylon Jennings, Reba McEntire, The Oak Ridge Boys, George Jones, Kenny Rogers, Keith Whitley, Randy Travis, Patty Loveless, Agnes, Kate Ryan, Claire Richards, Boyzone, Namie Amuro and September.