Ellinor Catherine Cunningham van Someren OBE (née MacDonald; 4 December 1915 – 1 September 1998) was a Ugandan-born British medical entomologist.

She specialised in mosquitoes, identifying at least thirty-three new species while employed by the Kenyan Health Service and partaking in scientific surveys in Kenya, Tanzania, and Somalia.

Van Someren was appointed an Officer of the Order of the British Empire in the Queen's Birthday Honours in 1974 for diplomatic services in scientific research overseas.

[1] She was the daughter of William George MacLeod MacDonald, a Scotsman from Inverness who came to Uganda in 1908 to work in the Posts and Telegraphs Department, and Lucy Ellinor Tunstall, an Englishwoman from Mere, Wiltshire.

[citation needed] In 1974 she was awarded an honorary degree of Doctor of Technology by Brunel University and was made an officer of the Order of the British Empire during the Queen's Birthday Honours 1974.