Pavlo Pavliuk, or Pavlo Mikhnovych (Ukrainian: Павлюк Павло Михнович; Polish: Paweł Michnowicz or Paweł Pawluk; died 1638 in Warsaw) was a Colonel of Registered Cossacks (Ukrainian: реєстрові козаки), who was elected as a hetman and led a Cossack-peasant uprising (the Pavliuk Uprising) in Left-bank Ukraine and Zaporizhia.
Mikhnovych ordered the captured commanders of Registered Cossacks to be executed and issued a declaration, in which he proclaimed a fight against the "lords" (pans).
The forces of Polish Crown Hetman Mikołaj Potocki (nicknamed "Bearpaw") in 1637 defeated the Cossacks in the Battle of Kumeyki, and Pavliuk surrendered near Borovytsia on December 20.
In February 1638, the king's representative Adam Kisiel said that the insurgents had not fought to the death, but had voluntarily surrendered because they had trusted him to be merciful.
The remnants of his forces capitulated near Borovytsia soon afterwards and he was succeeded in his command of Registered Cossacks by colonel Ilyash Karaimovich.