John Theodore Goddard (1879–27 November 1952) was an English solicitor and founder of the law firm Theodore Goddard (TG) based in London. The firm merged with Addleshaw Booth & Co on 1 May 2003 to become Addleshaw Goddard. Goddard was appointed by Wallis Simpson as an adviser to her during divorce proceedings and in relation to her involvement during the United Kingdom abdication Crisis of 1936.