Wakizashi swords, like other Japanese swords, were crafted by skilled swordsmiths known as "togishi" or "kaji." These artisans were highly regarded for their craftsmanship and expertise in the art of swordmaking.

During different periods of Japanese history, various schools or lineages of swordsmiths emerged, each with its own distinctive styles, techniques, and signatures. Some renowned swordsmiths known for their exceptional wakizashi creations include:

1. Sengo Muramasa: Muramasa was a famous swordsmith from the Muromachi period (14th to 16th century) known for his excellent craftsmanship and distinctively sharp blades. His works included both katana and wakizashi.
2. Osafune Kanemitsu: Kanemitsu was a swordsmith from the Osafune school during the Kamakura period (12th to 14th century). His blades, including wakizashi, were highly valued for their quality and refined designs.
3. Hizen Tadayoshi: Tadayoshi was a renowned swordsmith from the Hizen province during the Edo period (17th to 19th century). He and his descendants produced exceptional swords, including wakizashi, characterized by their elegance and meticulous craftsmanship.

It's important to note that many wakizashi swords were created by anonymous swordsmiths or lesser-known artisans who still produced excellent blades. The art of swordmaking in Japan involved a combination of metallurgy, forging techniques, and aesthetic considerations, resulting in unique and individual works of art.

Today, antique wakizashi swords crafted by these historical swordsmiths, as well as modern interpretations created by contemporary artisans, continue to be highly sought after by collectors and enthusiasts of Japanese swords.