RK may stand for:

Arts and entertainment

Rajesh Khanna Rajesh Khanna () (; born Jatin Khanna; 29 December 1942 – 18 July 2012) was an Indian actor, film producer and politician who worked in Hindi films. He is called as the "First Superstar of Hindi cinema", he consecutively starred in a record ...

, Bollywood film actor *

Ram Kapoor Ram Kapoor (; born 1 September 1973) is an Indian actor who works in films and television serials. He gained popularity portraying Jai Walia in the television series ''Kasamh Se'' and the character of Ram Kapoor in '' Bade Achhe Lagte Hain''. H ...

, Bollywood film actor *

Reality Kings Reality Kings (company name: MG Premium Ltd.) is a brand launched by RK Netmedia, an internet-based hardcore pornography production company operating out of Miami Beach, Florida. Acquisition by MindGeek A merger notification (with Manwin) was ...

, a North American pornographic website * ''

Rurouni Kenshin is a Japanese manga series written and illustrated by Nobuhiro Watsuki. The story begins during the 11th year of the Meiji period in Japan (1878) and follows a former assassin from the Bakumatsu, known as Hitokiri Battosai. After his work ...

'', a manga series by Nobuhiro Watsuki

Science and technology

* Radial keratotomy, a surgical procedure on the eye *

Rhodopsin kinase Rhodopsin kinase (, ''rod opsin kinase'', ''G-protein-coupled receptor kinase 1'', ''GPCR kinase 1'', ''GRK1'', ''opsin kinase'', ''opsin kinase (phosphorylating)'', ''rhodopsin kinase (phosphorylating)'', ''RK'', ''STK14'') is a serine/threonine-s ...

, an enzyme *

RK 62 The RK 62 (from Finnish , 'assault rifle 62'), officially 7.62 RK 62 and commercially M62, is an assault rifle manufactured by Valmet and Sako. It is the standard issue infantry weapon of the Finnish Defence Forces. The RK 62 was designed in 19 ...

or RK 95 TP, Finnish assault rifles (RynnäkköKivääri) *

r/K selection theory In ecology, ''r''/''K'' selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus on either an increased quantity of offspring at the expense of individ ...

, in biology, relating to the trade-off between quantity and quality of offspring *

Runge–Kutta methods In numerical analysis, the Runge–Kutta methods ( ) are a family of implicit and explicit iterative methods, which include the Euler method, used in temporal discretization for the approximate solutions of simultaneous nonlinear equations. The ...

, in numerical analysis

Other uses

Raising Kaine Raising Kaine, also referred to as RK, was a leading liberal political blog in Virginia. It functioned as a group blog and community forum for Virginia netroots activists, primarily directed toward helping to elect Democrats and other liberals an ...

, a defunct Virginia political blog *

Reichskommissariat ''Reichskommissariat'' ( en, Imperial Commissariat) is a German word for a type of administrative entity headed by a government official known as a ''Reichskommissar'' ( en, Imperial Commissioner). Although many offices existed, primarily throug ...

, a historical Nazi territorial division * Religious knowledge, also known as

religious education In secular usage, religious education is the teaching of a particular religion (although in the United Kingdom the term ''religious instruction'' would refer to the teaching of a particular religion, with ''religious education'' referring to te ...

Royal Khmer Airlines Royal Khmer Airlines was a small airline based in Phnom Penh, Cambodia. It operated scheduled passenger services out of Phnom Penh International Airport and Angkor International Airport.Flight International 12–18 April 2005 History Finally, ...

, ceased operations 2007 (IATA code RK) *

R Airlines R Airlines, legally incorporated as ''Skyview Airways Co. Ltd.'', was a Thai charter airline headquartered in the Don Mueang District, Bangkok and based out of nearby Don Mueang International Airport. It ceased operations on 18 February 2018. H ...

, ceased operations 2018 (IATA code RK) *

Ryanair UK Ryanair UK is a British low-cost airline with its second base at Stansted Airport. The airline is the UK subsidiary of the low-cost Irish airline group Ryanair Holdings, and a sister airline to Ryanair, Buzz and Malta Air. It commenced operati ...

, UK based subsidiary airline of

Ryanair Ryanair is an Irish ultra low-cost carrier founded in 1984. It is headquartered in Swords, Dublin, Ireland and has its primary operational bases at Dublin and London Stansted airports. It forms the largest part of the Ryanair Holdings family ...

(IATA code RK)

Arts and entertainment

Science and technology

Other uses

See also