Yoshikazu Okada (岡田 良一; born February 27, 1901, Minato, Tokyo; died June 23, 1974), also known as Kōtama Okada (岡田 光玉), was the founder of the Mahikari new religious movement in Japan (Shinshūkyō).
Yoshikazu Okada was born on February 27, 1901 in the Aoyama area of Tokyo's Minato Ward.
He was born into a wealthy family as the son of Inasaburo, a major general in the Imperial Japanese Army.
After serving in military campaigns in China and Indochina, Okada retired from the army in 1941 due to a back injury with the rank of lieutenant colonel.
After an amicable settlement was reached (wakai), Sakae Sekiguchi assumed the leadership of Sekai Mahikari Bunmei Kyodan (now known outisde Japan as the World Divine Light Organization), and Keishu Okada established Sukyo Mahikari.