Uddevalla is a city and the seat of Uddevalla Municipality, Västra Götaland County, Sweden with 31,212 inhabitants in 2010.
It is located at the bay of the south-eastern part of the sea known as Skagerrak. The beaches of Uddevalla are filled with seashells, and Uddevalla has one of the largest shell banks in the world.
Uddevalla has a small port and once hosted a large shipyard called Uddevallavarvet, which in 1960 was the largest employer in Bohuslän. But in the 1970s all shipyards in Sweden experienced a recession which also led to the closure of Uddevallavarvet in 1985