Acting Hetman was a title during the 17th, and 18th centuries, in the Cossack Hetmanate

Cossack Hetmanate

The Hetmanate or Zaporizhian Host was the Ruthenian Cossack state in the Central Ukraine between 1649 and 1782.The Hetmanate was founded by first Ukrainian hetman Bohdan Khmelnytsky during the Khmelnytsky Uprising . In 1654 it pledged its allegiance to Muscovy during the Council of Pereyaslav,...

. The acting hetman was the governing authority in the Hetmanate temporarily substituted for the hetman

Hetmans of Ukrainian Cossacks

Hetman of Ukrainian Cossacks as a title was not officially recognized internationally until the creation of the Ukrainian Hetmanate. With the creation of Registered Cossacks units their leaders were unofficially referred to as hetmans, however officially the title was known as the "Senior of His...

. The acting hetman was appointed by the hetman himself, to perform the duties of the hetman when absent during military campaigns, foreign travels, or his incapacitation. As well as a temporary replacement if the hetman's office became vacant, because of death, abdication, or deposition.

Some notable acting hetmans who held this form of the office were Yakym Somko

Yakym Somko

Yakym Somko , was a Ukrainian Cossack military leader of the Pereyaslav regiment and was the Acting Hetman of Left-bank Ukraine in 1660-1663, during The Ruin....

 who was appointed by Yurii Khmelnytsky

Yurii Khmelnytsky

Yurii Khmelnytsky , younger son of the famous Ukrainian Hetman Bohdan Khmelnytsky and brother of Tymofiy Khmelnytsky, was a Zaporozhian Cossack political and military leader...

 in 1660 until his execution in 1663, Demian Mnohohrishny

Demian Mnohohrishny

Demian Mnohohrishny was the Hetman of Left-bank Ukraine from 1669 to 1672. See The Ruin His surname literally means "of many sins"....

 was appointed by Petro Doroshenko

Petro Doroshenko

Petro Dorofeyevych Doroshenko was a Cossack political and military leader, Hetman of Right-bank Ukraine and a Russian voyevoda.-Earlier life:...

 from 1668-1669 until becoming full time hetman, and Pavlo Polubotok

Pavlo Polubotok

Pavlo Polubotok , was a Cossack political and military leader and Acting Hetman of the Left-bank Ukraine between 1722 and 1724.- Biography :...

who served as acting hetman in 1722, till 1724.