Thomas Ellwood (1639-1713) was an English religious writer.
He was born in Oxfordshire, the son of a rural squire. He joined the Quakers and became a friend of William Penn and John Milton. However, he was persecuted for his faith and spent some time in prison. His best-known work, Davideis (1712), is a poem about the life of King David. His autobiography, The History of the Life of Thomas Ellwood, published posthumously, is a valuable historical document.