Louise "Loulou" Boulaz (6 February 1908 – 13 June 1991) was a Swiss mountain climber and alpine skier who made numerous first ascents in the Alps.
[1] She attended a trade school and worked as a journalist for the International Labour Organization in Geneva.
[2] Boulaz began climbing in the Alps in the 1930s and continued making major ascents until the 1970s.
In 1959, she was a member of the all-female expedition to Cho Oyu, 8,188 m (26,864 ft) and the sixth-highest mountain in the world, where Claude Kogan, Claudine van der Straten-Ponthoz and three Sherpas died during an avalanche.
[1] In 1977, she was the first to climb a new route in the Aïr Mountains of the Sahara, which she named Tour Loulou.