USS Thunderchild (NCC-63549) was an Akira-class heavy cruiser on active duty in Starfleet during the late 24th century.
- The Ship Recognition Manual, Volume 1: The Ships of Starfleet gives NCC-65449 as the registry.
In 2373, Thunderchild - under the command of Captain Quinn - fought against the Borg in the Battle of Sector 001. During the battle the crew, including James Dulmis repelled a boarding party of Borg Drones. When most of the fleet was down, the few remaining ships left, including Thunderchild and USS Enterprise-E, were led by acting fleet commander Jean-Luc Picard to take down the Borg cube. (Star Trek: First Contact, Star Trek: The Adventures of Argus: "Trial By Fire")
In 2376, Thunderchild participated in the Battle of Sol against the Vendoth. (Star Trek: Unity (crossover): "United We Stand - Together")
In 2380, Thunderchild — under the command of Captain Matsuda — was absorbed into a Borg cube. (TNG novel: Before Dishonor)