Meeting Place: Ministry of Foreign Affairs (Office of the Minister)
President: Georges Clemenceau
United States of America:
- Woodrow Wilson, President of the United States
- Robert Lansing, Secretary of State
British Empire:
- David Lloyd George
- Arthur James Balfour
France:
- Georges Clemenceau
- Pichon
Italy:
- V. E. Orlando
- Baron S. Sonnino
Japan:
- Marquis Saionji
- Baron Makino
Secretariat:
- France: P. Dutasta
- United States of America: Joseph Clark Grew
- British Empire: Lt. Colonel Sir Maurice Hankey
- Italy: Count L. Aldrovandi
- Japan: Sadao Saburi