Maud Frances Sambourne Messel (5 August 1875 – 8 March 1960) MBE was a British artist and horticulturalist.

[1] She married wealthy German-Jewish stockbroker Leonard Charles Rudolph Messel OBE in 1898.

[1][3] During World War I, Maud Messel was commandant of the Knowle Auxiliary Hospital, a 20-bed military hospital, in Balcombe, West Sussex near the Mussel's country home Balcombe House.

Hundreds of wounded soldiers were treated at the Knowle hospital.

[4] At Balcombe House and their later country home Nymans, Messel created extensive and widely praised rose gardens filled with old garden roses.