Regional Transit Authority

Regional Transit Authority may refer to:


 * Central Puget Sound Regional Transit Authority
 * Greater Cleveland Regional Transit Authority
 * Greater Dayton Regional Transit Authority
 * New Orleans Regional Transit Authority
 * Regional Transit Authority of Southeast Michigan
 * Regional Transportation Agency of Central Maryland
 * Southwest Ohio Regional Transit Authority

One of 15 Regional Transit Authorities in Massachusetts, including:
 * Cape Cod Regional Transit Authority
 * Montachusett Regional Transit Authority (MART)
 * Worcester Regional Transit Authority