| Honorific Prefix: | Mr. |
| Tjung Tin Jan | |
| Office: | Member of People's Representative Council |
| Office1: | United States of Indonesia Senator from Bangka |
| Term Start: | 1950 |
| Term End: | 1960 |
| Term Start1: | 16 February 1950 |
| Term End1: | 16 August 1950 |
| Birth Name: | Zhong Dingyuan 钟鼎远 |
| Birth Date: | 9 February 1919 |
| Birth Place: | Sungai Selan, Bangka, Dutch East Indies |
| Death Place: | Jakarta, Indonesia |
| Death Date: | February |
| Alma Mater: | Leiden University |
| Party: | Catholic Party |
Mr. Tjung Tin Jan (9 February 1919 – February 1994) or Jani Arsadjaja[1] was an Indonesian politician and lawyer of Chinese Indonesian origin.
Tjung was born in Sungai Selan,[2] [3] part of what is today Central Bangka Regency of Bangka Island, then part of the Dutch East Indies, on 9 February 1919. He studied at a Recht Hogeschool in Batavia, before heading to the Netherlands to study law at the Leiden University, and he received a Master of Laws degree.[4]
After Tjung returned to the Indies, he had worked at a telephone company and became a lawyer before being appointed as a deputy prosecutor in Pangkal Pinang's court. He also founded, and later led, the Bangka branch of the Chinese Association.[4] Additionally, he acted as a legal adviser to a Chinese school in Pangkal Pinang.[2] [3] In 1950, he was appointed as a Senator for the newly formed Senate of the United States of Indonesia, representing Bangka.[5]
In 1950, following the Senate's dissolution and the defederation of the United States of Indonesia, Tjung was appointed to the Provisional People's Representative Council as a "minority representative", alongside several other Chinese Indonesian politicians.[6] He joined the Catholic Party in 1953, and he served in the People's Representative Council as a member of that party until 1960. Within that party, he was a member of its central board between 1953 and 1959, and its deputy general chairman between 1956 and 1958.[2]
During and after his time in the council, Tjung served as a director of several mining companies, including at Aneka Tambang where he was its financial director between 1968 and 1974.[2] He died in February 1994.[4]
Tjung was a proponent of the assimilation of Chinese Indonesians, and was critical of Yap Thiam Hien's writings on discrimination of the group within Indonesia.[2] [4] One example of such a critique was titled Indonesia Bukan Amerika (Indonesia is not the United States), published in 1960, in response to one of Hien's essays earlier that year.[4] In the same year he was also a signatory to the manifesto "Towards voluntary assimilation" (Indonesian: Menudju ke Asimilasi jang Wadjar) published in Star Weekly.[7] This manifesto, which may have been spearheaded by Ong Hok Ham, opposed the politics of integration advanced by Siauw Giok Tjhan and BAPERKI, which advocated for a distinct Chinese identity within a multiethnic Indonesia, and instead called for gradual and consensual assimilation into Indonesian society as a solution to ethnic conflict.[8] [9] [10]