Grünerløkka [] is a borough but also a neighborhood of the city of Oslo, Norway. Grünerløkka became part of the city of Oslo in 1858. Grünerløkka was traditionally a working class district; since the late 20th century the area has increasingly undergone gentrification. Especially in the core neighborhood of Grünerløkka, property prices tend to be higher than is typical of other Oslo East End boroughs.

Oslo is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of 709,037 in 2022, while the city's greater urban area had a population of 1,064,235 in 2022, and the metropolitan area had an estimated population of 1,546,706 in 2021.