Jeri Lynn Mooney (born January 28, 1944), better known as Susan Howard, is an American actress, writer, and political activist. She is perhaps best known for portraying the character Donna Culver Krebbs on the primetime serial Dallas (1979–87), and as a co-star of the series Petrocelli (1974–76). She is also a screenwriter and member of the Writers Guild of America.