| 1907 | Born in Takasaki City, Japan |
| 1921 | Attended Hongo Koto Elementary School, Bunkyo-ku, Tokyo |
| 1922 | Enrolled at Taihei Yogakai Institute |
| 1922 | Began friendship with Chozaburo Inoue, Aimitsu, and other artists |
| 1929 | Established Kogenkai |
| 1937 | Married Moto Kudo |
| 1943 | Established Emerging Artists Party: Aimitsu, Saburo Aso, Wasaburo Itozono, Chozaburo Inoue, Goro Oono, Masaaki Terada, and Shunsuke Matsumoto |
| 1945 | His Shitaya house was burned in an air raid; lost almost all of his works |
| 1947 | Enrolled in the Association of Independent Liberal Arts, and became a member |
| 1961 | Appeared on the Tokyo Television (current TBS) show Art Salon |
| 1979 | Published the book Masao Tsuruoka’s Pastel Colors by Fuma Gallery, Tokyo |
| 1979 | Died of cancer |
| 2007 | 100 Year Anniversary Exhibition - Enthusiastic Play,- Gunma Museum of Art, Tatebayashi, Japan |
| 2007 | 100 Year Anniversary Exhibition - Loving People and Laughing People,- The Museum of Modern Art, Kamakura, Japan |
| 1990 | Exhibition of Masao Tsuruoka’s Drawing World, The Museum of Modern Art, Gunma, Japan |
| 1979 | Post-war Western Drawings for Unique Talented Artists - Masao Tsuruoka’s Whole Story,- The Museum of Modern Art, Gunma, Japan |
| 2007 | 100 Year Anniversary Exhibition: the 40s and the ‘60s |
| 2004 | Retrospective Exhibition: Oil Paintings and Sculptures, after 25 years of Masao Tsuruoka’s death: the 40s and the 60s |
| 2002 | Tatsuo Ikeda and Masao Tsuruoka drawing on papers: the 50s and the 60s |
| 2001 | Pastel Color Exhibition after 22 years of Masao Tsuruoka’s death: the 60s |
| 1998 | Pastel Color Exhibition: the 60s |
| 1993 | Masao Tsuruoka Exhibition: the 40s and the 60s |
| 1989 | Three Persons Exhibition - Eikyu, Masao Tsuruoka, Chonan Yamaguchi |
