William John Leech (1881-1968) was an Irish painter, well known for his illustrations of Concarneau harbour.
The works of Leech feature coastal and harbour scenes, landscapes, interiors, still life and portraits.
He went to school at St Columba's College, Dublin in Rathfarnham, later studying at the Metropolitan School.
He later transferred to the Royal Hibernian Academy and studied under Walter Osborne. In 1903, Leech left Dublin for Paris, where he would fall in love with the French landscape.