Johannes Chrisos Tomus Simorangkir (February 17, 1922 – July 5, 1991) was an MP of Indonesia from the Indonesian Christian Party.

He was also the Member of the People's Representative Council of Mutual Assistance from 1967 until 1971, and the head of Indonesian Christian Party from 1962 until 1973.

He would later be re-appointed as the member and the head of the Parkindo fraction in the People's Representative Council of Mutual Assistance.

[2] He began teaching in the military world as the lecturer at the Indonesian National Armed Forces Staff and Command School (SESKO ABRI) from 1978 until 1982.

She was the chairwoman of the Indonesian Christian Women's Association, and the Head of National Daily Board of the 1945 Generation.