| Nissan Diesel Space Runner RM | |
| Production: | 1975–2010 |
| Class: | Complete bus Bus chassis |
| Body Style: | Single-decker bus |
| Doors: | 1 or 2 |
| Floortype: | Low floor 2-steps or 1-Step entrance |
| Engine: | ED6, FD6, FE6, J07E, 6M60 |
| Transmission: | UD (5 or 6 speed manual), ZF (5-speed automatic) |
| Length: | 8.2 metres to 8.9 metres |
| Width: | 2.3 metres |
| Height: | 3.0 metres |
| Related: | Nissan Diesel Space Runner RA |
The Nissan Diesel Space Runner RM (kana:日産ディーゼル・スペースランナーRM) was a medium-duty single-decker bus produced by the Japanese manufacturer Nissan Diesel (now known as UD Trucks) from 1975 until 2010. The range was only primarily available as city bus. It can be built as either a complete bus or a bus chassis.
It has a similar styling to the larger Space Runner RA that it has a rounded roof dome similar to the Space Runner RA with a double-curvature windscreen and a separately mounted destination blind.