A samurai dagger is commonly referred to as a tanto. The tanto is a traditional Japanese short sword or dagger with a blade length typically ranging from 15 to 30 centimeters (6 to 12 inches). It has a straight or slightly curved blade and a single or double-edged design.

The tanto was historically used by samurai warriors as a backup weapon or for close-quarters combat. It served various purposes, including self-defense, utility tasks, and as a symbol of status.

The tanto was versatile and suitable for stabbing, slashing, and cutting.

Compared to longer swords like the katana or wakizashi, the tanto offered enhanced maneuverability and could be easily concealed. Its compact size made it ideal for use in confined spaces or during surprise attacks.

Tanto blades were typically forged using traditional Japanese swordmaking techniques, and their craftsmanship varied depending on the era, region, and swordsmith. They were often adorned with artistic fittings, including ornate handles, decorative scabbards, and embellished guard (tsuba) designs.

Today, tanto knives inspired by the traditional Japanese design are popular among knife enthusiasts, collectors, and practitioners of martial arts. They are appreciated for their aesthetic appeal, historical significance, and practical functionality as a versatile cutting tool.