Penelope Williamson (born Fairbanks, Alaska, United States) is an American writer of romance novels under her real name and under the pen names Elizabeth Lambert and Penn Williamson. She is a two time winner of the Romance Writers of America RITA Award.
Penelope Williamson lives with her husband in Idaho. According to WorldCat, her most widely held book, The Outsider, is in 1,868 libraries; Heart of the West is in 1,827. Her books have been translated into French, German, Dutch, Spanish, Polish, Chinese, Hungarian, Japanese, Swedish, and Russian.