| Cosmas Batubara|| Politician|
| Arthur Batubara, Prisca Dewanti Batubara|Cosmas Batubara Wikipedia
Cosmas Batubara, born in Purbasaribu, Simalungun Regency, North Sumatra on 19 September 1938, is an Indonesian politician. He was a chairman and the co-founder of KAMI, an Indonesian anti-communist student group. He was one of the strongest proponent for the banning of the Communist Party of Indonesia and the arrest of fifteen ministers, including Subandrio.
He was a parliament member in 1967-1978. He was appointed as the Junior Minister of Housing in Suharto's Third Development Cabinet in 1978 and the State Minister of Housing in the 1983 Fourth Development Cabinet. In 1988, he was appointed as the Minister of Manpower in the Fifth Development Cabinet. In 1991, he was appointed President of the International Labour Organization.