* Bus, a road vehicle for transporting numerous people * London General Omnibus Company, principal bus operator in London from 1855 to 1933 * Williams Omnibus Bus Line, first mass transportation system in Toronto, Canada * Hedingham Omnibuses, original company name of Hedingham and District Omnibuses in Essex * London Omnibus Traction Society, for bus enthusiasts in the U.K. * Birmingham and Midland Motor Omnibus Trust operators of a transport museum near Birmingham, England In publishing: * An anthology of previously released material linked together by theme or author, especially in book form o Marvel Omnibus, a specific series of comic book compilations released by Marvel Comics * A common name for three books by one author bound in one volume, also known as a three-bagger or a three-decker o A Series of Unfortunate Events: The Ominous Omnibus (Books 1-3), by Lemony Snicket * Part of the title of several books, including: o The Celestial Omnibus and Other Stories, by E.M. Forster o The Cronin Omnibus, a volume containing three novels by A.J. Cronin o The Robert Heinlein Omnibus, science fiction stories by Robert A. Heinlein o The Solar Pons Omnibus, a collection of detective stories by August Derleth * Omnibus Press, a British book publisher