Arnold Boate (1606–1653) was a Dutch physician, writer and Hebraist who spent much of his life abroad, and lived for several years in Dublin. There he married Margaret Dongan, a judge's daughter, whom he portrayed lovingly in his book The Character of a Truly Virtuous and Pious Woman. He was the brother of Gerard Boate, author of The Natural History of Ireland, for which Arnold supplied much of the material. Both Gerard and Arnold were members of the Hartlib circle.