Susan Lillian Townsend, FRSL (née Johnstone, 2 April 1946 – 10 April 2014), was an English writer and humorist whose work encompasses novels, plays and works of journalism. She was best known for creating the character Adrian Mole.
After writing in secret from the age of 14, Townsend first became known for her plays, her signature character first appearing in a radio drama, but her work soon expanded into other forms. She enjoyed great success in the 1980s, with her Adrian Mole books selling more copies than any other work of fiction in Britain during the decade. This series, which eventually encompassed nine books, takes the form of the character's diaries. The earliest books recount the life of a teenage boy during the Thatcher years, but the sequence eventually depicts Adrian Mole in middle age. The Queen and I (1992), another popular work which was well received, was an outlet for her republican sentiments, although the Royal Family is still rendered with sympathy. Both the earliest Adrian Mole book and The Queen and I were adapted for the stage and enjoyed successful runs in London's West End.
Townsend was poor until well into her thirties, and used her experiences of hardship in her work. In her later years she suffered ill health, in part related to the diabetes she developed in the mid-1980s, and in her last years endured serious sight and mobility problems.