No. It is the second largest city in Norway.
Tromsø (also: Romsa in Northern Sami and Tromssa in Kven) is a city and municipality in Troms county, Norway. The administrative centre of the municipality is the city of Tromsø.Tromsø city is the ninth largest urban area in Norway by population, and the seventh largest city in Norway by population. It is the largest city and the largest urban area in Northern Norway, and the second largest city and urban area in Sápmi (following Murmansk).Source: Wikipedia
Madrid is the largest city in Spain and the third largest city in Europe.
Wilmington is the largest city in the state of Delaware.
Louisville.
Jacksonville.
Oslo, Bergen and Trondheim
The second largest city in Iceland is Kópavogur with a population of 26,157.
Arendal, Norway has a population of 41,655 people. It is the 19th largest city by population in Norway and has an area of 98.86 square miles.
Stockholm is the capital city of Sweden.
The capital of Norway is Oslo (located in the southern eastern section of Norway).Oslo is the capital and the most populous city in Norway.Oslo is the capital and the most populous city in Norway.There is no such thing as a "world capital of Norway." The capital (or "national capital") of Norway is Oslo.
Copenhagen is the capital city of Denmark. Helsinki is the capital and largest city of Finland. Oslo is the capital and the most populous city in Norway.