First chamber
First chamber stands for:
- Upper house of a parliament, more rarely also lower house .
- Arbitration body of a court, see Chamber (court) .
- First Chamber of the States General , the House of Lords in the Netherlands.
- First Chamber (Baden Assembly of Estates) , the Upper House of the Grand Duchy of Baden (1818–1918).
- First Chamber of the Diet of Sweden (the Upper House, 1865–1970).