The Santoku (meaning "three virtues") is an all-purpose kitchen knife born in Japan, designed to handle three types of ingredients: meat, fish, and vegetables. It combines the best features of the traditional Japanese Nakiri and the Western Gyutou. Its ease of use has made it the most popular knife in Japanese households today.

三徳とは肉、魚、野菜の3種類の食材を1本で調理できる、日本生まれの家庭用万能包丁です。日本の伝統的な「菜切包丁」と西洋の「牛刀」の使いやすさを掛け合わせて作られており、扱いやすいため現在日本の家庭で最も普及しています。