Tsuneo Hasegawa (長谷川 恒男, Hasegawa Tsuneo, December 8, 1947 – c. October 10, 1991) was a Japanese alpinist. His achievements include the winter solo ascent of the "Great North Faces of the Alps" or "North Face Trilogy" (Matterhorn in 1977, second winter solo ascent ever; Eiger in 1978, first winter solo ascent ever; Grandes Jorasses in 1979, also first winter solo ascent ever) and the world's first winter solo ascent of the South Face of Aconcagua in 1981.[1][2] He died in 1991 in an avalanche while ascending the Ultar II South east face.[3]
- 1977 World second winter solo ascent to Matterhorn North face[4]
- 1978 World first winter solo ascent to Eiger North face[5]
- 1979 Winter solo ascent to Grandes Jorasses North face[6]
- 1980 Winter solo ascent to Aconcagua North face Normal Route[7]
- 1981 World first winter solo ascent to Aconcagua South face France Route[8]
- "北壁に舞う:生きぬくことが冒険だ"(1979) Shueisha Publishing(集英社) ISBN 4-08-749015-7
- "岩壁よおはよう"(1981) Chuo Koron Publishing (中央公論社) ISBN 4-12-201139-6
- "北壁からのメッセージ"(1984) Minshusha Publishing(民衆社) ISBN 4-12-203192-3
- "我が青春の挑戦"(1984) Seikyo Shimbun Publishing(聖教新聞社) co-authored with Ken'ichi Horie
- "山に向かいて"(1987) Benesse Corporation Publishing (ベネッセコーポレーション福武書店) ISBN 4-8288-3184-3
- "生きぬくことは冒険だよ"(1992) Shueisha Publishing(集英社) ISBN 4-08-748759-8 edited by Masami Hasegawa and Toyoji Oda
- Fujiki, Takane (1974)"ああ南壁:第二次RCCエベレスト登攀記" Asahi Shimbun publishing. ISBN 4-12-202878-7
- Sase, Minoru (1994)"長谷川恒男虚空の登攀者" Yama To Keikoku Publishing(山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0