Mary Williams RWA (1911–2002) was Devon artist, known for her local landscapes. Born at Ottery St Mary, she attended the Exeter School of Art, and in 1935 became a member of the Exeter Art Society. In 1937 she joined RWS Art Club and in 1948 the Somerset Society of Artists. She was a regular exhibitor at the Royal West of England Academy, to which she was elected a member in 1965. She was also a member of the Society of Women Artists.
Williams regularly exhibited at the Royal Scottish Academy in Edinburgh and the Royal Society of Marine Artists. In 1974 a solo exhibition of her work was held at the Royal Albert Memorial Museum in Exeter.
