Irk (disambiguation)

Irk or IRK may refer to:


 * River Irk, a lake in northwest England
 * Irk Valley, location of the Irk Valley Junction rail crash
 * IATA airport code of Kirksville Regional Airport
 * Inward-rectifier potassium ion channel, a class of protein
 * ISO 639-3 code of the Iraqw language, a Cushitic language spoken in Tanzania
 * Irk, the fictional homeworld of main character Zim in the animated TV series Invader Zim
 * Islamic Republic of Kamistan, a fictional country in season 8 of the TV series 24
 * Institutional Recovery Key, a special kind of password in FileVault