Mary K. Wells (1 December 1920 – 14 August 2000) was an American television writer and actress. She acted on Return to Peyton Place, The Secret Storm, The Brighter Day, As the World Turns, Here Come The Waves, The Searching Wind, George Abbott's Three Men On A Horse, Any Wednesday (with Sandy Dennis), Edward Albee's Everything In The Garden, The Edge of Night (as Louise Grimsley Capice; Ray McDonnell played her husband), Big Town (played Lorelei Kilbourne) and Love of Life.
She wrote for All My Children from 1973-1993. She was nominated for 14 Daytime Emmys and won twice (1985 & 1988). Her first nomination was shared with Agnes Nixon, Wisner Washam, Kiki McCabe and Jack Wood.