Robert Julian Yeatman (15 July 1897 – 13 July 1968) was a British humourist who wrote for Punch. He is best known for the book 1066 and All That, a tongue-in-cheek guide to "all the history you can remember", which he wrote with W. C. Sellar. When asked to convert his BA from Oxford into an MA, Yeatman could not find the fee owing to debt, and hence he is recorded in 1066 and All That as "Failed M.A., etc. Oxon".