People
* Mary Simpson (priest) (1925–2011), one of the first women to be ordained an Episcopal priest (1977) * Mary Simpson (Northern Ireland politician), unionist politician in Northern Ireland in the 1970s and 1980s * Mary Simpson (violinist), violinist known for performing in Yanni's orchestra * Mary Elizabeth Simpson (1865–1948), New Zealand religious teacher, healer and writer * Mary Ellen Simpson, musician in The Ace of Cups * Mary Kell Simpson (1903–1970), South Australian physiotherapist later known as Dorothy Kell Finnis * Mary Simpson (house servant) * Mary Jean Simpson, American scholar and public servant * Mollie Evans (1922-2016), British antique dealer, born Mary SimpsonCharacters
*Mary Simpson, fictional character in the ''1632'' book series *Mary Simpson, fictional character on the TV series '' The Andy Griffith Show'' *Mary Simpson, fictional character in the film '' Two Mafiamen in the Far West'' {{hndis, Simpson, Mary