Osotogari (大外刈り, Ōsoto-gari) is one of the original throws of Judo.
It belongs to the first group, Dai Ikkyo, of the traditional throwing list, Gokyo (no waza), of Kodokan Judo. It is also included in the current 67 Throws of Kodokan Judo. It is classified as a foot technique, Ashi-Waza.
In a classical right-handed osotogari, tori steps next to uke with his left leg and reaps uke's right leg (at the back of the thigh) with his right leg.