Randori

infobox martial art term
pic = Embukai01.jpg
kanji = 乱取り
hiragana = らんどり
revhep = randoriNihongo|Randori|乱取り is a term used in Japanese martial arts to describe free-style practice or sparring, sometimes with multiple attackers. The term literally means "chaos taking" or "grasping freedom," implying a freedom from the structured practice of "kata".

The exact meaning of randori depends on the martial art it is used in. In judo and Shodokan Aikido, it most often refers to one-on-one sparring where partners attempt to resist and counter each other's techniques. In other styles of aikido, in particular Aikikai, it refers to a form of practice in which a designated aikidoka defends against multiple attackers in quick succession without knowing how they will attack or in what order. This form of randori is not sparring, and the attackers are usually not allowed to resist or attempt to counter the defender's techniques. It must be noted that the term is used only by Aikikai dojos outside Japan. In Japan, this form of practice is called Nihongo|taninzu-gake|多人数掛け, which literally means multiple attackers. In kendo, "jigeiko" means "friendly" free combat as in competition, but not counting the points.

Although in karate the word "kumite" is usually reserved for sparring, some schools also employ the term "randori" with regard to "mock-combat" in which both karateka move very fast, parrying and attempting acts of extreme violence with all four limbs (including knees, elbows, etc.) yet only ever making the slightest contact. Total control of the body is necessary and therefore only the senior grades can typically practice randori. In these schools, the distinction between randori and "kumite" is that in randori, the action is uninterrupted when a successful technique is applied.

Randori may be contrasted with "kata", as two potentially complementary types of training.