The Code of the Woosters is a novel by P. G. Wodehouse, first published on 7 October 1938, in the United Kingdom by Herbert Jenkins, London, and in the United States by Doubleday, Doran, New York.It was serialised in The Saturday Evening Post (US) from 16 July to 3 September 1938 and in the London Daily Mail from 14 September to 6 October 1938.

The Code of the Woosters is the third full-length novel to feature two of Wodehouse's best-known creations, Bertie Wooster and his valet Jeeves.

The Code of the Woosters is the first installment in the Totleigh Towers saga. It introduces the characters of Sir Watkyn Bassett, the owner of Totleigh Towers, and Roderick Spode, later known as Lord Sidcup after his accession to an earldom.