Aalborg is a city in Denmark. About 143,000 people live there (2021), which makes it the fourth largest city in Denmark.

Aalborg was founded around 700 A.D. and was heard about for the first time in the year 1040. It was a proper city in 1342 and became the seat of a Lutheran bishop in 1554.

Aalborg is in Northern Jutland, near the Limfjord.