Darsie Japp was an English painter and soldier.
Japp was born in Liverpool and attended St John's College of the University of Oxford. After he graduated, he worked in the offices of his father's shipping company in the City of London between 1904 and 1907. While working in the City, Japp studied at the night school of the Lambeth School of Art under Philip Connard. Japp studied at the Slade School of Art between 1908 and 1909, where he became friends with his fellow student Stanley Spencer and would often visit him in his home at Cookham in Berkshire. Japp specialised in landscape and figure paintings, and exhibited with the New English Art Club of which he became a member in 1919.
At the start of the First World War Japp joined the British Army, and eventually became a Major in the Royal Field Artillery commanding an artillery battery in Macedonia, for which he was awarded the Military Cross. Coincidentally, Spencer also served in Macedonia in the last years of the war and the British War Memorial Committee was keen for both men to be released from their military duties to work on paintings for the proposed, but never built, national Hall of Remembrance.