Old bill

Old bill or Old Bill may refer to:


 * Slang for the police, used in the United Kingdom
 * Old Bill (comics), a cartoon character created in 1914–15 by Bruce Bairnsfather
 * The Better 'Ole or The Romance of Old Bill, 1917 stage musical comedy based on the cartoon character
 * The Romance of Old Bill, 1918 British silent film based on the play
 * Old Bill Williams (1787-1849), American mountain man and frontiersman