Mondoñedo is a small town and municipality in the Galician province of Lugo, Spain. As of 2009, the town has a population of 4,508. Mondoñedo occupies a sheltered valley among the northern outliers of the Cantabrian Mountains. Despite being the core of the region of A Mariña, it is the city with the fifth biggest population after Viveiro, Ribadeo, Foz and Burela.
The municipality of Mondoñedo is in the northern half of the province of Lugo and is bordered on the north by the municipalities of Foz and Alfoz, to the south by Pastoriza and Riotorto, to the east by Lorenzana and to west with Abadín.
The population of Mondoñedo is distributed throughout the 15 parishes that make up the council.