The Romanian National Council was an association of Romanian political leaders from Transylvania created on the eve of the expected dissolution of the monarchy of the Austro-Hungarian Empire. The council was formed at the end of October 1918 in Budapest, following the model of the already established National Councils in the empire such as the Hungarian National Council or the Slovak National Council. Its members were representatives of the Romanian National Party in Hungary and Transylvania, the main Romanian party in the Diet of Hungary, and representatives of the Romanian Social Democrats, the Romanian section of the larger Social Democratic Party of Hungary. Two of them, Octavian Goga and Vasile Lucaciu, were also founding members of the National Council of Romanian Unity established in Paris on 3 October along with Take Ionescu and Constantin Angelescu from the Kingdom of Romania. The council organized the Great National Assembly of Alba Iulia that decided for the Union of Transylvania with Romania on 1 December 1918, and provided the members for the Ruling Council of Transylvania, the de facto governing body of the region from 2 December 1918 until April 1920.