The Nissan Diesel Space Runner RP (kana:日産ディーゼル・スペースランナーRP) was an integrally-constructed heavy-duty single-decker bus produced by the Japanese manufacturer Nissan Diesel between 1986 until 2007.

The range was primarily available as a public bus and as a complete bus.

The Nissan Diesel Space Runner RP is available as either in step-entrance or low-entry variants.

Its step-entrance compartment is known as Two Step whereas its low-entry compartment is known as One Step.

A common design is that it has a double-curvature windscreen with a rounded roof dome similar to its successor, the Nissan Diesel Space Runner RA with a separately mounted destination indicator.