Jill Abbott Fenmore Atkinson (née Foster, previously Reynolds, Chancellor, Brooks, Thurston, and Sterling) is a fictional character on The Young and the Restless, portrayed by Jess Walton since June 1987. The character has previously been played by originator Brenda Dickson from 1973-1980 and again from 1983-1987 and also by Deborah Adair from 1980-1983.