- 1930
- Born in Mizusawa city, Iwate prefecture
- 1952-1955
- JIYU Art Exhibition
- 1959
- Japan Independent Exhibition
- 1960
- Formed “Iwate Youth Artist Conference”, assumed the position of chairman
- 1963
- Participated in organization of “The N39 Group” Since then, have been exhibiting in this group’s exhibition
- 1987
- Exhibition of Contemporary Art Condition in Tohoku (Fukushima Prefectural Museum of Art, Fukushima, JAPAN)
- 1992
- Michinoku-no-Zokei Ⅱ Hito-no-Katachi Exhibition (Miyagi Prefectural Museum of Art, Miyagi, JAPAN)
The Art of Homo-Movens Theory / World of Ohmiya Masao Exhibition (Yorozu Tetsugoro Memorial Museum of Art, Iwate, JAPAN) - 1998-
- Vladivostok Biennale of Visual Arts (RUSSIA)
- 2002
- Exhibition of Graphic Design’s Stream of Iwate (Yorozu Tetsugoro Memorial Museum of Art, Iwate, JAPAN)
- 2006
- Ohmiya Masao Exhibition The World of Homo-Movens Theory
- 2010
- Ohmiya Masao Exhibition The Breathing Magma of Hokui (Tama Art University Museum, Tokyo, JAPAN)
- 2013
- Ohmiya Masao Exhibition The Magma of Hokui Reached the Boiling Point (Yorozu Tetsugoro Memorial Museum of Art, Iwate, JAPAN)
- 2014
- ART/X/TOYAMA in UOZU（Niikawa-Bunka Hall, JAPAN)
- 2019
- Ohmiya Masao Exhibition LAST DRAWINGS (Ishigami Museum of Art, Iwate, JAPAN)
- 2021
- Special exhibition at the 4th collection exhibition (Iwate Prefectural Museum of Art, Iwate, JAPAN)
OMIYA Masao大宮 政郎
Saint's PORTRAIT 21c, ICON
76 x 56 cm
graphite, pastel, mixed media on paper