Birk may refer to:

• Birk (market place), a demarcated area with its own laws and privileges, the Bjarkey laws
• Reykjavík Airport's ICAO code
• Birk (name)
• Birk, the German name for Petelea Commune, Mureș County, Romania

Reykjavík Airport (Icelandic: Reykjavíkurflugvöllur, is the main domestic airport serving Reykjavík, the capital of Iceland, located about from the city centre. Having shorter runways than the city's bigger Keflavík International Airport, which is sited out of town, it only serves internal flights within Iceland and to Greenland and the Faroe Islands, small international charters, transatlantic ferry flights and private flights. It can also serve as alternate airport for flights inbound Keflavík, in case of adverse weather conditions there.

Birk may refer to:

• Birk (market place), a demarcated area with its own laws and privileges, the Bjarkey laws
• Reykjavík Airport's ICAO code
• Birk (name)
• Birk, the German name for Petelea Commune, Mureș County, Romania

Reykjavík Airport (Icelandic: Reykjavíkurflugvöllur, is the main domestic airport serving Reykjavík, the capital of Iceland, located about from the city centre. Having shorter runways than the city's bigger Keflavík International Airport, which is sited out of town, it only serves internal flights within Iceland and to Greenland and the Faroe Islands, small international charters, transatlantic ferry flights and private flights. It can also serve as alternate airport for flights inbound Keflavík, in case of adverse weather conditions there.