Hugh John Lofting was an English American writer, trained as a civil engineer, who created the classic children's literature character Doctor Dolittle. The fictional physician to talking animals, based in an English village, first appeared in illustrated letters to his children which Lofting sent from British Army trenches in the First World War. Lofting settled in the United States soon after the war and before his first book was published.

Lofting, born January 14, 1886, in Maidenhead, Berkshire, to Elizabeth Agnes (Gannon) and John Brien Lofting, was of English and Irish ancestry. His eldest brother, Hilary Lofting, later became a novelist in Australia, having emigrated there in 1915.

Lofting was educated at Mount St Mary's College in Spinkhill, Derbyshire. From 1905 to 1906, he studied civil engineering at the Massachusetts Institute of Technology in Cambridge, Massachusetts.

Lofting travelled widely as a civil engineer before enlisting in the Irish Guards regiment of the British Army in the First World War. Not wishing to write to his children about the brutal war, he wrote imaginative letters, which later became the foundation of the successful Doctor Dolittle novels for children. Seriously wounded in the war, he emigrated with his family to Killingworth, Connecticut, in 1919. He was married three times and had three children, one of whom, his son Christopher, became the executor of his literary estate.

Lofting died September 26, 1947, at his home in Topanga, California from cirrhosis of the liver. He is buried at Evergreen Cemetery in Killingworth, Middlesex County, Connecticut.