The Coat of Arms of the Polish–Lithuanian Commonwealth was the symbol of the Polish–Lithuanian Commonwealth, representing the union of the Crown of the Polish Kingdom

Crown of the Polish Kingdom

The Crown of the Kingdom of Poland , or simply the Crown , is the name for the unit of administrative division, the territories under direct administration of Polish nobility from middle-ages to late 18th century...

 and Grand Duchy of Lithuania

Grand Duchy of Lithuania

The Grand Duchy of Lithuania was a European state from the 12th /13th century until 1569 and then as a constituent part of Polish-Lithuanian Commonwealth until 1791 when Constitution of May 3, 1791 abolished it in favor of unitary state. It was founded by the Lithuanians, one of the polytheistic...

. It combined their previously separate coats of arms

Coat of arms

A coat of arms is a unique heraldic design on a shield or escutcheon or on a surcoat or tabard used to cover and protect armour and to identify the wearer. Thus the term is often stated as "coat-armour", because it was anciently displayed on the front of a coat of cloth...

:
During the January Uprising

January Uprising

The January Uprising was an uprising in the former Polish-Lithuanian Commonwealth against the Russian Empire...

 a similar coat of arms was proposed for the restored Commonwealth, with Archangel Michael, the coat of arms of Ukraine

Ukraine

Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...

added as the third element. However, it was never officially introduced.