| RA2 multiple unit | |
| Service: | 2006– |
| Manufacturer: | Metrovagonmash, Russia |
| Yearconstruction: | 2005–2015 |
| Yearservice: | from 2006 |
| Numberbuilt: | at least 115 |
| Fleetnumbers: | known: 001-095, 101-120 |
| Operator: | Russian Railways, Ulaanbaatar Railbus, Lithuanian Railways, Ukrainian Railways |
| Depots: | over 50 depots |
| Width: | 3.14frac=8NaNfrac=8 |
| Maxspeed: | 100km/h |
| Engine: | MTU |
| Enginetype: | Diesel |
| Poweroutput: | 2 × 350kW |
| Tractiveeffort: | 250-2NaN-2 |
| Transmission: | Hydraulic by Voith |
| Aux: | 50 V |
| Brakes: | Air |
| Coupling: | SA3 |
The RA-2 Multiple Unit (ru|РА2) is a Russian diesel multiple unit (railbus), type 2. The RA-2 is produced by Metrovagonmash and is designed for passenger transportation on non-electrified railway lines with high traffic, as well as suburban and inter-regional communication. They can be operated as a part of only two head end cars, and with one or two trailing cars. The head / end cars have one exit from the cab for high platforms, and one in the centre of the car high and low platforms.