IK or Ik may refer to:
Businesses and organizations IK Investment Partners, a European private equity firm Imair Airlines (IATA code IK) Iparretarrak, a Basque nationalist organization
Languages Ik language (ISO 639 alpha-3 ikx), spoken by the Ik people of Uganda Inupiaq language (ISO 639 alpha-2), a group of dialects of the Inuit language, spoken in Alaska
Places Ik (river), a tributary of the Kama in Bashkortostan and Tatarstan, Russia Ik (Berd), a tributary of the Berd in Novosibirsk Oblast, Russia Bolshoy Ik, a tributary of the Sakmara in Bashkortostan and Orenburg Oblast, Russia Ilm-Kreis, a region in Germany
Science and technology IK (gene), a protein-encoding gene IK code, a classification of resistance to mechanical impacts Internationale Kerze (German for "international candle"), an old photometric unit to measure luminous intensity Inverse kinematics, a branch of mechanics
Other uses Ik Onkar, a symbol used in the Sikh religion Ik people of Uganda The Ik, a 1975 play by Colin Higgins and Denis Cannan
See also