In the Congress of Vienna (1815), the Big Four consisted of the major powers that played a crucial role in shaping the post-Napoleonic Europe. They were Great Britain, Russia, Austria, and Prussia. However, France was not a member of the Big Four.

Great Britain, as one of the victorious powers in the Napoleonic Wars, played a significant role in the Congress. It was led by the British Foreign Secretary, Lord Castlereagh, who aimed to restore a balance of power in Europe.

Russia, under the leadership of Tsar Alexander I, also played a prominent role in the Congress. The Russian delegation championed the idea of legitimacy and the restoration of monarchies in Europe.

Austria, led by Prince Klemens von Metternich, had a major say in the deliberations of the Congress. Metternich aimed to maintain stability and suppress revolutionary movements across Europe.

Prussia, led by King Frederick William III, was also a member of the Big Four. Prussia sought territorial gains and security against its neighboring states.

Therefore, France was not a member of the Big Four in the Congress of Vienna.