Jančić's rebellion (Serbian:Јанчићева буна/Jančićeva buna), also known as theFirst Mašići rebellion (Прва Машићка буна/Prva Mašićka buna), was a rebellion led by ethnicSerbs in theGradiška region against theOttoman government in theBosnia Eyalet. It broke out in September 1809 following a string of economical, national and religious deprivations of the rights of Serbs.

With theFirst Serbian Uprising that broke out in theSanjak of Smederevo in 1804,hajduk actions also began to the west of theDrina, especially after the decisive Serbian victory at theBattle of Mišar (1806). Hajduks also arrived from Serbia, and they were especially active on theKozara. The work of priest Jovo from Svinjar, priest Nikodim from Mačkovac, and the brotherhood of theMoštanica Monastery also led to the uprising.^[1] Jovan Jančić, a gunsmith fromSarajevo, smuggled arms for three years from theMilitary Frontier seeking to arm the Serb-inhabited districts betweenUna andBosna rivers.^[2]

The revolt broke out in theBosnian Frontier andBosnian Posavina.^[3] Jovan Jančić–Sarajlija was the organizer of the uprising, at first with support from bishopVenedikt Kraljević. Jančić negotiated with Serbia, Russia and France regarding the revolt.^[2] The Ottomans sensed that something was in planning, so they increased the terror against the population, and Kraljević fled to Austria. While planning the operation, Jančić turned to Austria and France for help, but without any success. In the dilemma of whether to start an uprising without proper planning, he was forestalled by a progress of events.^{[citation needed]}

Peasants took up arms on 23 September 1809, in the region of Gradiška, beginning fromMašići. The fighting began on 25 September, and on the night of 25–26 September, the Ottomans, who had gathered a strong army, captured Jančić in his house. The rest of the rebels, without any commander, were afraid and retreated to their villages. Only the rebels on the mountains ofKozara andMotajica continued, and offered strong resistance, which the Ottomans finally crushed by mid-October, after burning villages and looting. The Roman Catholic population (localCroats, etc.) of theBosnian frontier intended to join the uprising, but never did. After the crushing of the revolt in mid-October,^[4] the Ottoman government in the region captured the rebel leaders and executed them. Some rebel bands becamebrigands and maintained in the mountains, attacking the Turks.^[4][5] The revolt failed due to lack of coordination between the rebel units.^[2]

In 1826, priest Đorđije Vujičić fromCikota made an unsuccessful attempt at raising a rebellion in Bosnia.^[5] Another revolt broke out in the region in 1834, followingPriest Jovica's Rebellion, in Mašići, known as the "Second Mašići Rebellion". A memorial plaque stands in Mašići dedicated to the fallen people of both rebellions.^{[citation needed]}

• List of Serbian Revolutionaries

• Serb rebellions against the Ottoman Empire
• Ottoman period in the history of Bosnia and Herzegovina
• Gradiška, Bosnia and Herzegovina
• History of the Serbs of Bosnia and Herzegovina
• Conflicts in 1809
• Ottoman–Serbian Wars
• 1809 in the Ottoman Empire
• Rebellions in Bosnia and Herzegovina
• 19th-century rebellions
• First Serbian Uprising

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