Oemar Said Tjokroaminoto, better known in Indonesia as H.O.S. Tjokroaminoto, was an Indonesian nationalist. He became one of the leaders of the Islamic Trade Union, founded by Samanhudi, which became Sarekat Islam, which they both cofounded.
- Occupation
- politician
- Position held
- founder, chairperson, member of the Volksraad
- Citizenship
- Dutch East Indies
- Born
- August 16, 1882
- Died
- December 17, 1934
