Mariscal Ramón Castilla (Spanish mariscal marshal, "Marshall Ramón Castilla") is one of the eight provinces in the Loreto Region of Peru.

22728 on October 18, 1979, by President Francisco Morales Bermúdez.

The province was named after Ramón Castilla.

Its territory is mostly flat and covered by the Amazon Rainforest.

This Loreto Region geography article is a stub.