| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Daniel Tji Hak Soun | |
| Bishop of the Roman Catholic Diocese of Wonju | |
| Church: | Catholic Church |
| Diocese: | Roman Catholic Diocese of Wonju |
| Appointed: | March 22, 1965 |
| Predecessor: | None |
| Successor: | James Kim Ji-seok |
| Ordination: | December 15, 1952 |
| Consecration: | June 29, 1965 |
| Birth Date: | September 9, 1921 |
| Birth Place: | Chunghwa County, North Hwanghae, Korea, Empire of Japan |
| Hangul: | 지학순 |
| Mr: | Chi Haksun |
| Rr: | Ji Hak-sun |
Daniel Tji Hak Soun (September 9, 1921 – March 12, 1993) was a bishop of the Roman Catholic Diocese of Wonju.
Daniel Tji Hak Soun was ordained a priest on December 15, 1952.
On March 22, 1965, Pope Paul VI appointed him Bishop of Wonju. He was consecrated bishop on June 29, 1965 by Antonio del Giudice.[1] Co-consecrators were the Bishop Thomas F. Quinlan of the Diocese of Chunchon and Bishop John A. Choi Jae-seon of the Diocese of Busan.
Tji was associated with Kim Chi-ha and was arrested in 1974 alongside five other priests and a nun over allegations of providing financial support to opponents of the government of Park Chung Hee and sentenced to death. He was sympathetic to the April Revolution and was a leader of the urban poor and supported nonviolent resistance to the regime.[2]