Silas Ayari Donrai Papare (18 December 1918 – 7 March 1978) was a Papuan–Indonesian politician and guerilla leader who is a National Hero of Indonesia. Originating from the Yapen Islands, Papare trained and worked as a nurse prior to the Second World War, during which he organized local resistance and gathered intelligence against occupying Japanese forces. While he initially held pro-Dutch views after the war, this shifted after he was not delegated to the Malino Conference and he was influenced by Sam Ratulangi into founding the pro-Indonesian Indonesian Irian Independence Party.