The capture of the frigate Kilduin was a brief altercation between Russian and Swedish forces during the beginning Russo-Swedish war of 1788–1790.

Onboard one of the deployed frigates, Bellona, was Johan Petter Ternstedt, who had been ordered to patrol the waters of Marstrand when he spotted the lightly manned Russian frigate Kilduin anchored in the direction of Skagen.

[1] Upon spotting the frigate, Ternstedt gathered five men and started rowing towards Kilduin in the dark of night.

[1][2] After the altercation, the Swedes quickly screwed down the ship's hatches so that the crew below deck would not be able to come out.

[2] On board the ship were a lot of supplies which would aid Sweden in her war effort against Russia; it included 128 cannons, 16,000 cannonballs, and 500 rifles.