R1, R.I., R01 or R-1 may refer to:

Military equipment

R-1 tank The R-1 was a Romanian armored fighting vehicle production during World War II, Romanian-used tank that saw action during World War II within the mechanized Romanian cavalry. It was a modified version of the AH-IV, a Czechoslovakia, Czechoslovak ...

, a Romanian tank from World War II *

R-1 (missile) The R-1 rocket (NATO reporting name SS-1 Scunner, Soviet code name SA11, GRAU index 8A11) was a tactical ballistic missile, the first manufactured in the Soviet Union, and closely based on the German V-2 rocket. The R-1 missile system entered int ...

, a post World War II Russian rocket * AEG R.I, a 1918 German super-heavy bomber design * DFW R.I, a 1916 German prototype bomber aircraft *

HMS Caprice HMS ''Caprice'' was a destroyer of the Royal Navy, ordered on 16 February 1942 from Yarrow, Scotstoun. She was originally to be named HMS ''Swallow'' but this was changed to ''Caprice'' before launch to fit her revised class name. She is the o ...

, a destroyer originally designated with Pennant Number R01 *

Linke-Hofmann R.I The Linke-Hofmann R.I was a heavy bomber aircraft designed and built by the German company Linke-Hofmann during World War I. Only four were built and the type never saw service with the ''Luftstreitkräfte'' (Imperial German Air Service). Develop ...

, a World War I German prototype bomber aircraft *

Polikarpov R-1 The Airco DH.9A was a British single-engined light bomber designed and first used shortly before the end of the First World War. It was a development of the unsuccessful Airco DH.9 bomber, featuring a strengthened structure and, crucially, repl ...

, a Soviet Union copy of the 1931 British Airco DH.9A light bomber aircraft *

USS R-1 (SS-78) USS ''R-1'' (SS-78) was the lead ship of the United States R-class submarine, R-class coastal and harbor defense submarines of the United States Navy. Construction and commissioning ''R-1''′s keel was Keel-laying, laid down on 16 October 1917 ...

, a 1918 United States Navy R-class coastal and harbor defense submarine * a South African made version of the

FN FAL The FAL (a French acronym for (English: "Light Automatic Rifle")), is a battle rifle designed in Belgium by Dieudonné Saive and manufactured by FN Herstal (simply known as FN). During the Cold War the FAL was adopted by many countries of th ...

battle rifle * a version of the 1942 German Rheintochter ground-to-air missile * Raytheon Sentinel, Sentinel R1, a British airborne radar platform * a Romanian designation of the Czechoslovak-designed tankette AH-IV

Transportation

Automobiles

* Jaguar R1, a British 1999 Formula One racing car * Javan R1, a British sports car * Nuro R1, an American autonomous van * Ora R1, a Chinese electric city car * Praga R1, a Czech sports car * Rivian, R1S and R1T, an American electric mid-size SUV and pickup truck * SIN R1, a Bulgarian sports car * Subaru R1, a Japanese city car

Aviation

* Beriev R-1, a 1952 Soviet turbojet-powered flying boat * International Air Transport Association code for Sirin (airline)

Motorcycles

* Yamaha YZF-R1, a motorcycle

Rail

;Lines * R1 (New York City Subway car) * R1 (SEPTA), a former commuter rail line in Philadelphia, Pennsylvania, which was split into: ** Airport Line (SEPTA), or R1 Airport line ** SEPTA Main Line ''(R1 Glenside)'' Also called the Glenside Combined * R1–RG1 (Rodalies de Catalunya), a commuter rail line in Catalonia, Spain ;Trains * LCDR R1 class, a class of 0-4-4T steam locomotives built by the South Eastern and Chatham Railway to modified LCDR design in 1900 * PRR R1, a 1934 American single prototype electric locomotive * SECR R1 class, a class of 0-6-0T steam locomotives rebuilt by the South Eastern and Chatham Railway from the SER R class between 1910 and 1922

Roads

* R1 expressway (Czech Republic), an expressway in the Czech Republic * R1 expressway (Slovakia), a road connecting Trnava and Banská Bystrica * R1 ring road (Belgium), a ring road around Antwerp * R-1 motorway (Spain), a future radial motorway connecting Madrid and El Molar * Radial Road 1 or R-1, an arterial road of Manila, Philippines

Computing

* R1 (expert system), a 1978 expert system written by John McDermott * .r01, a RAR file extension * an alternate name for the Rice Institute Computer, an innovative computer extant at Rice University from 1959 to 1971

Biology

* R1 plasmid, a plasmid found in E Coli * ATC code R01 ''Nasal preparations'', a subgroup of the Anatomical Therapeutic Chemical Classification System * Haplogroup R1 (Y-DNA), a human Y-chromosome DNA haplogroup * The Insect wing#Venation, R1 vein in insect wings

Other

* R01 grant, a form of competitive funding issued by the National Institutes of Health in the United States * R1: Explosive when dry, a risk phrase * R-1 Federation * Rogue One, a 2016 film * R1 Multi-frequency signaling, a telephony control technique * R1 (nuclear reactor), the first nuclear reactor of Sweden * R1 space, R₁ space in topology, in mathematics * R-1 visa, a non-immigrant Visa (document), visa which allows travel to United States for service as a minister or other religious occupation. * DSC-R1, a 2005 Sony Cyber-shot R series camera * TV R1, Czech regional television station * R1, a brand sold by Imperial Tobacco * Region 1, the DVD region code for United States, Canada, Bermuda, U.S. territories * Research I university, a designation of U.S. universities engaged in the highest levels of research activity * BBC Radio 1, a national radio station in the United Kingdom * Radio One (New Zealand) a New Zealand student radio station * Samsung YP-R1, a digital audio player {{Letter-Number Combination Disambiguation