Bardu is a municipality in Troms county, Norway. The administrative centre of the municipality is the village of Setermoen, the largest urban area in the municipality.Norway's largest military garrison is located at Setermoen. The military is the municipality's largest employer and more than 1,000 young soldiers perform their duty service here each year.Bardu was separated from the municipality of Ibestad in 1854. The initial population of the new municipality of Bardu was 757. The municipal borders have not changed since then.Bardu is a Norwegianized form of the Sámi name Beardu. The meaning of the Sámi name is probably "long and steep mountain side".