Walter Augustus de Havilland (31 August 1872 – 20 May 1968) was an English patent attorney who became professor of Law at Waseda University and was one of the first Westerners to play the ancient Chinese game Go at a high level.

He was the fourth son of the Reverend Charles Richard de Havilland (1823-1901), of a landed gentry family of Guernsey origin, and his second wife Margaret Letitia (1831-1910),[1] daughter of Captain John Molesworth, R.N.

[2][3] He was a pupil at Harrow and Elizabeth College, Guernsey and subsequently studied Theology and Classics at Cambridge University from 1890 to 1893, residing at Ayerst Hostel, graduating B.A.

His teacher was Yoshida Toshio; a game between the two of them from 1908 was considered good enough for publication in the magazine Gokai Shinpo, with commentary from Iwata Kei (later President of the Hoensha).

In 1910, de Havilland published a short work entitled The ABC of Go; the National War-Game of Japan, which brought him minor celebrity in the Go-playing world.