Evelyn Murrough O'Brien Toulmin (13 August 1877 – 7 January 1945) was an Anglo-Argentine cricketer.
Toulmin was a left-handed batsman who bowled right-arm slow.
The son of Reverend Frederick Bransby Toulmin and Katherine O'Brien (sister of the 13th Baron Inchiquin), he was born at Hatfield Peverel, Essex, and educated at the King's School, Oxford.
He later moved to Argentina, with him next appearing in first-class cricket for Argentina in February 1912, making three appearances against the touring Marylebone Cricket Club.
[5] He returned to England later in 1912, playing a single first-class match for Essex against Yorkshire at the Fartown Ground, Huddersfield.