Bybrua is a village in Gjøvik Municipality in Innlandet county, Norway. The village is located about 7 kilometres (4.3 mi) to the west of the town of Gjøvik. The 0.88-square-kilometre (220-acre) village has a population (2021) of 1,086 and a population density of 1,240 inhabitants per square kilometre (3,200/sq mi).

Bybrua is primarily a residential area that has become a suburb of the town of Gjøvik. There is a local school, grocery store with postal functions, and a daycare centre. The village area grew up around the main county highway leading west from the town.