Yes, a tanto knife is of Japanese origin. The tanto is a traditional Japanese dagger or short knife that has been used in Japan for centuries. It typically features a straight blade with a sharp point and can vary in length, usually ranging from around 15 to 30 centimeters (6 to 12 inches).

The tanto served various purposes in Japanese culture. Historically, it was used as a weapon by samurai for close-quarters combat, as a tool for self-defense, and as a utility knife for everyday tasks. The tanto's design and construction were adapted to meet the needs of different users and situations.

The tanto knife has a distinct appearance characterized by a straight blade with a prominent point, often accompanied by a simple and ergonomic handle design. The blade geometry and profile are optimized for stabbing and thrusting rather than slicing or cutting.

While tanto knives are associated with Japanese culture, it is worth noting that similar styles of short knives can be found in other cultures as well. However, the term "tanto" specifically refers to the Japanese version of this type of knife.