| 1. T. S. Sivagnanam is an Indian justice appointed as the Chief Justice of the High Court of Calcutta on 11 May 2023. |
| 2. He grew up in Chennai, Tamil Nadu, in a well-to-do family. |
| 3. Sivagnanam enrolled at the Bar Council of Tamil Nadu on 10 September 1986 after obtaining a bachelor’s degree in law. |
| 4. He started his legal practice with senior advocate R. Gandhi. |
| 5. After 14 years as an advocate, he became the Additional Standing Counsel of the Central Government. |
| 6. Sivagnanam also served as the Counsel for Southern Railway and a senior panel advocate for the Central Government. |
| 7. In 2007, he was nominated as a panel lawyer for the High Court of Judicature at Madras. |
| 8. He later served as a senior panel lawyer for Customs & Central Excise Department and as the Special Counsel for the Department of Revenue. |
| 9. Sivagnanam became an Additional Judge at the Madras High Court on 31 March 2009 and a permanent judge two years later. |
| 10. He headed the Computer Committee of the Madras High Court, overseeing technological advancements during his tenure. |
| 11. In 2021, he was transferred to the Calcutta High Court and sworn in as a judge on 25 October 2021. |
| 12. Sivagnanam was recommended as the Chief Justice of the Calcutta High Court by the Supreme Court Collegium on 9 February 2023 and officially appointed on 11 May 2023. |
| 13. Before becoming Chief Justice, he served as the Acting Chief Justice of the Calcutta High Court. |
| 14. Sivagnanam will retire from his position on 15 September 2025 after approximately two years. |
| 15. He was part of the Board of Governors of the Tamil Nadu State Judicial Academy and inaugurated the SICCI Centre for ADR in Chennai on 8 April 2019. |
| 16. Sivagnanam was recommended as the Chief Justice of the Calcutta High Court by the Supreme Court Collegium on 1 May 2023 and officially appointed on 11 May 2023. |
| 17. His oath of office as Chief Justice was administered by Governor C.V. Ananda Bose in the presence of the Chief Minister of West Bengal, Mamta Banerjee, and other eminent leaders. |
| 18. He was at the 2nd rank in the all India seniority list of high court judges on the date of his retirement. |
| 19. Sivagnanam retired from his position on 15 September 2025 after serving as Chief Justice for over 2 years. |
