KRL may refer to:

• KRL, IATA code for Korla Airport, China
• Khan Research Laboratories, Pakistan military laboratory complex
• KRL (programming language), Knowledge Representation Language
• Kinetic Rule Language, a rules-based event programming language
• Kuka Robot Language, language used for programming KUKA robots
• KRL Jabotabek, commuter rail service in Jakarta and its surrounding areas.
• Kochi Refineries Limited, an oil refinery in India
• krl, ISO 639-2 and ISO 639-3 code for the Karelian language

• Heizhu
• Heizhu Valley
• Heiås
• Heiðar Geir Júlíusson
• Heiðarvíga saga
• Heiðarvígasaga
• Heiðmörk
• Heiðr
• Hejazi Arabic
• Hejazi riyal
• Hejazi Turabns
• Hejazi turban
• Hejazi Turbans
• Hejaz Province, Ottoman Empire
• Hejaz railroad
• Hejaz riyal
• Hejce
• Hejduk
• Hejiang Province
• He Jianping
• He Jifeng
• He Jinbao
• Hejing County
• He Jingying
• Hejira (song)