The Treaty of Union is the name usually now given to the treaty which led to the creation of the new state of Great Britain, providing that the Kingdom of England and the Kingdom of Scotland were to be "United into One Kingdom by the Name of Great Britain". At the time it was more often referred to as the Articles of Union.

The Kingdom of Great Britain was a sovereign state in Western Europe from 1707 to the end of 1800. The state was created by the 1706 Treaty of Union and ratified by the Acts of Union 1707, which united the kingdoms of England and Scotland to form a single kingdom encompassing the whole island of Great Britain and its outlying islands, with the exception of the Isle of Man and the Channel Islands. The unitary state was governed by a single parliament at the Palace of Westminster, but distinct legal systems—English law and Scots law—remained in use.