Mary Caroline Coulcher OBE GCStJ (19 November 1852 – 15 June 1925) was a British philanthropist involved with the St John Ambulance organisation.

She moved to Ipswich in 1870[1] and seven years later the St John Ambulance organisation was formed in England.

[1] In January 1880 she became the Hon Local Secretary of the Ipswich Centre of the St John Ambulance Association (SJAA).

Her life was one of the inspirations for a play titled "Dread Zeppelin" by the Red Rose Chain theatre.

In 1909 she was given the St John Ambulance Brigade Service medal and in 1914 it was upgrade to "with Bar".