Seiseki Abe (阿部醒石 Abe Seiseki) (April 26, 1915 - May 18, 2011, Osaka, Japan) was a Japanese shodo and aikido teacher who had a unique relationship with aikido founder Morihei Ueshiba, being both his student in aikido and his teacher in calligraphy.
Abe was verbally awarded the grade of 10th dan by Ueshiba