An ōtsuchi (大槌, lit. large hammer or mallet) is a large wooden war mallet used by the samurai class of feudal Japan. The ōtsuchi had a shaft of about 6 ft (182.88 cm) much like the ono (war axe). It was mainly used for door breaching.
- Powerpuff Girls Z features an otsuchi wielded by Buttercup.
- Sonic the Hedgehog features Amy Rose wielding an otsuchi.
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- Pauley's Guide - A Dictionary of Japanese Martial Arts and Culture Author Daniel C. Pauley, Publisher Samantha Pauley, 2009 ISBN 978-0-615-23356-7 P.131