Kristianiagade is a street located close to Østerport station in the Østerbro district of Copenhagen, Denmark.

Buildings in the street include Domus Medica, a former noble town mansion which now houses the Danish Medical Association.

The street is named after the capital of Norway, Oslo (known as Christiania/Kristiania 1624–1925), in recognition of the close ties between the two countries that were part of Denmark-Norway until 1814.

The street is located at the site of Grønlands Lynette (Greenland's Lunette, an outwork situated outside the ravelin in front of Copenhagen's former East Gate.

It was not part of the deal when Copenhagen Municipality took over the rest of the city's decommissioned fortifications from the Danish state in 1770.

It was instead used as a military training ground by the Royal Danish Army's engineering troops together with the rest of the glacis outside Kastellet.

The nearest railway station are Østerport, served both by S-trains and the Copenhagen Metro City Circle Line.