Mary Beaumont Medd (née Crowley, 4 August 1907 - 6 June 2005) was a British architect, known for public buildings including schools.

[5] She studied alongside Jessica Albery, Justin Blanco White, and Judith Ledeboer where they developed a commitment to housing reform and social concerns which impacted their future careers.

[6][7][8] As Mary Crowley, working with Cecil George Kemp, she designed three houses at 102, 104 and 106 Orchard Road, Tewin, Hertfordshire, in 1935–36.

[5] She later met her husband David Leslie Medd (1917–2009), when she was part of the team of architects commissioned to build schools in Hertfordshire after World War II.

[10] National Life Stories conducted an oral history interview (C467/29) with Mary Medd in 1998 for its Architects Lives' collection held by the British Library.