Osinsky Uyezd () was an administrative division of Perm Governorate, Russian Empire, which existed in 1781âÂÂ1923. The administrative center was the town of Osa. It had an area of .
At the time of the Russian Empire Census of 1897, Osinsky Uyezd had a population of 321,774. Of these, 82.7% spoke Russian, 10.7% Bashkir, 4.8% Tatar and 1.8% Udmurt as their native language.