Yes, traditional Japanese katanas are typically full tang swords. The tang of a katana extends through the entire length of the handle, ensuring a solid and continuous connection between the blade and the hilt. This full tang construction contributes to the strength, durability, and overall balance of the katana.

In a katana, the tang is known as the "nakago." It extends from the base of the blade, through the handle, and often ends with a threaded or peened section that secures the hilt components in place. The handle is then wrapped around the tang for a secure grip.

The full tang design in a katana provides several advantages. It ensures the structural integrity of the sword, making it less prone to breakage or separation during combat. The continuous piece of metal from the blade to the handle allows for efficient power transfer, enhancing cutting or thrusting force. Additionally, the full tang contributes to the balance, stability, and control of the katana, enabling precise sword techniques.

It's worth noting that while traditional katanas are typically full tang, there may be variations in tang design among different swordsmiths or modern interpretations. Some modern katana replicas or lower-quality swords may not feature a full tang construction. If you are looking for an authentic and high-quality katana, it is advisable to seek reputable sources and consult with experts to ensure you are acquiring a sword with a proper and reliable full tang.