R1

R1 or R-1 may be:In good credit standing, current on credit file.

Military equipment:
* R-1 (missile), a post World War II Russian rocket
* AEG R.I, a German World War I super-heavy bomber design
* USS R-1 (SS-78), a 1918 ship of the R-class coastal and harbor defense submarines of the United States Navy
* a South African made version of the FN FAL battle rifle

In transportation:
* R1 (Motorway), a Belgian motorway (ring road) around Antwerp
* R1 (New York City Subway car)
* R1 (SEPTA), a commuter rail line in Philadelphia, Pennsylvania
* Expressway R1, an expressway in Czech Republic
* Motorroad R1 (Slovakia)
* Subaru R1, a car
* Yamaha YZF-R1, a motorcycle
* International Air Transport Association code for Sirin (airline)

In computing:
* R1 (expert system), an expert system written by John McDermott
* an alternate name for the Rice Institute Computer, an innovative computer extant at Rice University from 1959-1971

In biology:
* R1 plasmid, a plasmid found in E Coli
* Haplogroup R1 (Y-DNA)

Other:
* R1 Club, R1 Club or R1 Group, a leading provider of luxury and executive services in the Asia-Pacific region
* R1 Multi-frequency telephone signaling
* R1 (nuclear reactor), the first nuclear reactor of Sweden
* , a risk phrase
* BBC Radio 1, a British radio station
* Real Personal Trooper Type-1, a fictional original mecha from the Super Robot Wars series
* Reemtsma No. 1, a brand of cigarettes made by Imperial Tobacco
* an abbreviation for DVD region code 1