Metropolitan Transit Authority may refer to: Metropolitan Transit Authority (Boston), succeeded by the Massachusetts Bay Transportation Authority (MBTA) Metropolitan Transit Authority (Victoria), Melbourne, Australia Erie Metropolitan Transit Authority, Pennsylvania Metropolitan Transit Authority of Harris County, Texas Metropolitan Transit Authority (Miami-Dade), Florida Nashville Metropolitan Transit Authority, Tennessee Topeka Metropolitan Transit Authority, Kansas See also Metropolitan Transportation Authority, New York Los Angeles County Metropolitan Transportation Authority, California San Diego Metropolitan Transit System Réseau de transport métropolitain, Montreal, Canada MTA (disambiguation), for other things abbreviated "MTA"