Capela de Nossa Senhora da Agonia (Chapel of Nossa Senhora da Agonia) is located in the parish of Monserrate, Viana do Castelo, Portugal.
The chapel constitutes a late baroque style that is built in the 18th century.
Viana do Castelo is famous for its traditional festival that takes place over the weekend after 15 August, the day of Nossa Senhora da Agonia, celebrating a patron saint of fishermen.