William Monod Crawford (1872–1941) was an Irish colonial civil servant in India and an entomologist.
He was born in Paris on 31 October 1872, living there until he was sixteen when the family returned to Ireland.
He served in the Indian Civil Service from 1895 to 1919, in which year he returned to Ireland in 1919 to live in Belfast.
Many of his notes concerned migrant moths and butterflies, and he documented the occurrences of several rare hawk moths including the only Northern Ireland record of Hippotion celerio also known as the silver-striped hawk-moth.
His extensive collection of butterflies from the Indian sub-continent is in the Ulster Museum, Belfast.