Metrobus may refer to:

• MetroBus (Bristol), a bus rapid transit system in Bristol, England, United Kingdom
• Metrobus (Buenos Aires), a bus rapid transit system in Buenos Aires, Argentina
• Metrobus (Istanbul), a public transit system in Istanbul, Turkey
• Metrobus (Lahore), a public rapid transit system in Lahore, Pakistan
• Métrobus (Quebec), bus rapid transit service operated by the Réseau de transport de la Capitale in Quebec City, Canada
• Metrobus (Tegucigalpa), a bus system under construction in Tegucigalpa, Honduras
• Mexico City Metrobús, a bus rapid transit system in Mexico City, Mexico
• Multan Metrobus, a public rapid transit system in Multan, Pakistan
• Rawalpindi-Islamabad Metrobus, a public rapid transit system in Rawalpindi-Islamabad, Pakistan
• Los Angeles Metro Busway, a bus rapid transit system in Los Angeles, United States
• Metronit, a bus rapid transit system in Haifa, Israel
• Transmilenio, a bus rapid transit system in Bogotá, Colombia

• Los Angeles Metro Bus, the transit bus service of the Los Angeles County Metropolitan Transportation Authority in Los Angeles County, California, United States
• Metrobus (Miami), the bus network of Miami-Dade Transit in Miami, Florida, United States
• Metrobus (Montreal), express feeder routes to the Montreal métro in Montréal, Québec, Canada
• Metrobus (Panama), the massive bus system in Panama City, Panama
• MetroBus (St. Louis), the bus system operated by the Bi-State Development Agency in St Louis, Missouri, United States
• Metrobus (Sydney), a high frequency bus network in Sydney, Australia
• Metrobus (Washington, D.C.), a bus service in Washington DC, United States, and immediate suburbs in Maryland and Virginia
• Metrobus (South East England) bus operator with routes in parts of Surrey, Kent, Sussex, and Greater London
• Metrobus Transit, a public transit system in St John's, Newfoundland, Canada
• MetroMini, a minibus system is part of the public transport system of Jakarta, Indonesia.
• CapMetro Bus, a public transit bus network in Austin, Texas, United States
• El Metropolitano, a public transit system in Lima, Perú
• Havana MetroBus, the principal bus network of Havana, Cuba
• Metro Tasmania a public bus service in Tasmania, Australia
• Metropolitan Transit Authority of Harris County, bus service in the Houston, Texas, United States

• Metrobús (ticket), the Madrid Metro and bus ticket

• King County Metro, the public transit authority of King County, Washington, United States
• Metro Bus Corporation, a Seoul bus operator
• Metrobus (London) a bus operator in London, England, operated by London General
• Metrobus (Malaysia), a bus operator in the Klang Valley
• Metrobus (South East England) a bus operator in Surrey, Sussex and Kent in South East England
• MetroBus, trading name of the Metropolitan (Perth) Passenger Transport Trust from 1995 until 2003
• M-é-t-r-o-b-u-s, a bus and metro operator Tramway de Rouen in Rouen, France
• West Yorkshire Metro, passenger transport executive in West Yorkshire, England

• MAN Metrobus (de), a bus model manufactured by MAN and Krauss-Maffei (1959-1973), and under license as Ikarus MAN IK-5 by Ikarus Zemun (1972-1981), and Roman 112U by Autobuzul Bucharest (1974-1980)
• MCW Metrobus, a bus model manufactured by Metro Cammell Weymann in the 1970s and 1980s

• Metro (disambiguation)