Katana
A katana was a traditional Japanese sword.

In 2256, among many weapons stored or displayed in Captain 's laboratory aboard the , there were a couple of katanas. ()

In 2258 of an alternate reality,  used a retractable sword resembling a katana to fight off the Romulans. ()

In the prime reality, a samurai wielding a katana appeared firstly to Lieutenant Hikaru Sulu and later to Captain Kirk and First Officer Spock while they and most of their fellow officers from the  were visiting the Shore Leave Planet in 2267. ()

In 2268, after the Beta XII-A entity altered the matter on the USS Enterprise to create primitive weapons, Lieutenant Sulu was given a katana. ()

External links 
 
 

fr:Katana
Hand-held weapons