MA1

MA-1 may refer to:


 * Bennett MA-1 ventilator, a powerful medical ventilator to assist respiration
 * Fire control system used on the F-106 interceptor
 * MA-1 bomber jacket, a nylon flight jacket
 * DI MA-1 rifle, a Myanma variant of the IMI Galil
 * U.S. Route 1 in Massachusetts
 * Massachusetts's 1st congressional district
 * HD Radio's AM hybrid mode
 * Mercury-Atlas 1, a test flight of Project Mercury
 * Mal'ta boy, Paleolithic human remains