Vaulruz (voʁy; Vâlruz ˈvoʁy) is a municipality in the district of Gruyère in the canton of Fribourg in Switzerland. Vaulruz is first mentioned in 1115 as Valle Rodulphi. It was first mentioned at Vaulruz in 1303. Vaulruz has an area, , of . Of this area, or 64.0% is used for agricultural purposes, while or 26.1% is forested. Of the rest of the land, or 8.9% is settled (buildings or roads), or 0.4% is either rivers or lakes. Of the built up area, housing and buildings made up 3.5% and transportation infrastructure made up 4.9%. Out of the forested land, 24.8% of the total land area is heavily forested and 1.3% is covered with orchards or small clusters of trees. Of the agricultural land, 10.0% is used for growing crops and 48.8% is pastures and 4.9% is used for alpine pastures. All the water in the municipality is flowing water. The municipality is located in the Gruyère district, on the Bulle-Châtel-Saint-Denis road. It consists of the village of Vaulruz and a number of hamlets. The blazon of the municipal coat of arms is Gules a Barrulet wavy Argent abased overall three Pine Trees Vert trunked proper issuant from Coupeaux of the third. Vaulruz has a population () of . , 7.3% of the population are resident foreign nationals. Over the last 10 years (2000–2010) the population has changed at a rate of 15.4%. Migration accounted for 5.7%, while births and deaths accounted for 7.5%. Most of the population () speaks French (843 or 96.3%) as their first language, German is the second most common (21 or 2.4%) and Portuguese is the third (7 or 0.8%). There is 1 person who speaks Italian and 1 person who speaks Romansh. the population was 48.9% male and 51.1% female. The population was made up of 436 Swiss men (44.5% of the population) and 43 (4.4%) non-Swiss men. There were 462 Swiss women (47.1%) and 39 (4.0%) non-Swiss women. Of the population in the municipality, 396 or about 45.3% were born in Vaulruz and lived there in 2000. There were 315 or 36.0% who were born in the same canton, while 95 or 10.