A 41-year-old man was shot to death on a Bronx MTA bus Monday — and his killer got away and has not been caught, cops said.

The victim was struck in the stomach on a Bx36 bus on E. Tremont Ave. near White Plains Road about 2:30 p.m., police said.

Medics rushed him to Jacobi Medical Center, where he died. His name was not immediately released.

The shooter was last seen fleeing south on White Plains Road and has not been caught. He was wearing a white T-shirt and carrying a black handgun, according to law enforcement sources.