William Alfred Delamotte (1775 Weymouth, Dorset - 1863 Oxford), was an English painter and engraver.
W. A. Delamotte was the son of a French refugee. His remarkable drawing skills were apparent from an early age, so that he enjoyed the royal patronage of King George III. After having exhibited at the Royal Academy in 1793, he enrolled at the Royal Academy Schools the following year, becoming a student of Benjamin West, another of the King's protégés and President of the Royal Academy. Even during these years of study, Delamotte chose to turn his attention to architectural and landscape work. From the Academy he moved to Oxford, depicting its buildings in numerous sketches. In 1803 he accepted the post of drawing-master at the Sandhurst Military Academy, a position he held for 40 years.
Besides producing watercolours and a few oils, he turned to printmaking by way of etching, lithography and soft-ground etching.
He was the brother of George Orleans Delamotte, landscape artist and teacher.
Philip Henry Delamotte (1821–1889), photographer and illustrator, was the son of Mary and William Alfred Delamotte. He was born on 21 April 1821 at Sandhurst Military Academy. Philip Delamotte also became an artist and eventually Professor of Drawing and Fine Art at King's College London. He died on 24 February 1889 in Bromley at the home of his son-in-law Henry Charles Bond.