Darizavyn Losol (Mongolian: Дарьжавын Лосол; April 15, 1890 – July 25, 1940) was a revolutionary leader and post-Revolution governmental figure in Mongolia until he was purged in 1939.

In 1918 Losol along with Dambyn Chagdarjav, Khorloogiin Choibalsan and Dogsomyn Bodoo founded the Konsulyn Denj (Консулын дэнж:Consular Hill) group of Mongolian revolutionaries in Khüree.

From 1924 to 1925 he served as deputy member of the Presidium (Politburo) of the MPRP Central Committee responsible for making important policy decisions.

In 1934 he co-authored the two-volume work Mongol Ardyn Undessnii Khuv'sgalyn Ankh Üüsch Baiguulsan Tovch Tüükh (Short History of the Original Birth and Establishment of the Mongolian People's National Revolution) with his close friend Khorloogiin Choibalsan and G.

Choibalsan recruited Dashiin Damba (MPRP General Secretary from 1954 to 1958), to deceive Losol into boarding a plane he believed was bound for Dornod Province in eastern Mongolia.