Malwana fort (Sinhalese: මල්වාන බලකොටුව) was located in Malwana, Gampaha, on the banks of the Kelani River. It was built by Portuguese in 1590s. The small fort served as a residence for the Portuguese Governor or Captain-Generals. Records indicate that a company of 70 soldiers were stationed at the fort. The fort was attacked by Kandyan forces in the 1630s. The Portuguese subsequently abandoned it and focused their forces on Colombo fort and its defence. There are also stories that allege that Bhuvanaikabahu VII was assassinated by the Portuguese when he visited the Malwana fort.