1st Congress

1st Congress may refer to:

Countries

 * 1st United States Congress
 * First Continental Congress
 * 1st National People's Congress
 * 1st Congress of the Philippines
 * 1st Congress of the Commonwealth of the Philippines

Parties

 * 1st Congress of the Russian Social Democratic Labour Party
 * 1st Congress of the Workers' Party of North Korea
 * 1st National Congress of Kuomintang
 * 1st National Congress of the Communist Party of China

Internationals

 * Geneva Congress (1866), the 1st Congress of the First International
 * International Socialist Workers Congress of Paris, the 1st Congress of the Second International
 * First International Syndicalist Congress
 * 1st Congress of the Comintern