ALK

ALK or Alk may refer to:

• ALK Airlines, a Bulgarian charter airline
• Anaplastic lymphoma kinase, a human gene
• Alk-, a root word used in organic chemistry
• Alaska Air Group ticker symbol
• Aslockton railway station, Nottinghamshire, England, National Rail code
• ALK or ALK-Abelló, a Danish pharmaceutical company
• Automated lamellar keratoplasty, a type of eye surgery
• Alk, Albania, a village
• Alk, Iran, a village in Kurdistan Province
• Alk-e Kohneh ("Old Alk"), a village in Kurdistan Province, Iran
• SS Alk, a German cargo ship in service 1928–45
• A sailing ship renamed as Albatross
• ALK, the ICAO Code for SriLankan Airlines