| K&R | Kernighan and Ritchie 
| Others |
| KR | Crotone (Provence)
| Others |
| KR | Karla Rosa
| Others |
| KR | Kazaa Revolution
| Others |
| KR | Keanu Reeves
| Others |
| KR | Keith Richards
| Others |
| KR | Kenny Roberts (country western singer)
| Others |
| KR | Kenotron Rectifier
| Others |
| KR | Kern
| Others |
| KR | Kernel Range
| Others |
| KR | Kernighan Ritchie
| Others |
| KR | Ketogenic Ratio
| Others |
| KR | Kevlar Rebar
| Others |
| KR | Key Rate
| Others |
| KR | Key Region
| Others |
| KR | Key Results
| Others |
| KR | Keyboard Random
| Others |
| KR | Kidnap and Ransom
| Others |
| KR | Kill Ratio
| Others |
| KR | Killer Right
| Others |
| KR | Kind Regards
| Others |
| KR | King's Regulations
| Others |
| KR | King's Rook
| Others |
| KR | Kings Regulations
| Others |
| KR | Kirkpatrick and Reisch
| Others |
| KR | Kit Review
| Others |
| KR | Klan Rune
| Others |
| KR | Knight and Razer
| Others |
| KR | Knights Reborn
| Others |
| KR | Knock Retard
| Others |
| KR | Knowledge of Results
| Others |
| KR | Knowledge Representation
| Others |
| KR | KonditionieRungsregel
| Others |
| KR | Konversionsfilter Rot
| Others |
| KR | Korea (South) (Republic)
| Others |
| KR | Korea Republic
| Others |
| KR | Korg Rhythm
| Others |
| KR | Koulu Rata
| Others |
| KR | KR represents
| Others |
| KR | Kramers Restricted
| Others |
| Kr | Kroner (unit of currency)
| Others |
| KR | Krypton
| Element |
| KR | Kuder Richardson
| Others |
| KR | South Korea
| Others |