Diwan Bahadur Sir Thyagaraja Sadasiva Iyer | |
|---|---|
 | |
| President, Hindu Religious and Charitable Endowments Department (HR & CE), Madras Presidency | |
| In office 1921–1927 | |
| Chief Justice of Travancore | |
| In office 1905–1910 | |
| Personal details | |
| Born | 23 June 1861 Kumbakonam, Madras Presidency |
| Died | 1 December 1927 (aged 66) Madras |
| Nationality | Indian |
| Spouse | Mangalammal |
| Occupation | Judge, bureaucrat |
| Profession | Law |
Sir Thyagaraja Sadasiva Iyer (23 June 1861 – 1 December 1927) was an Indian judge and theosophist who served as the Chief Justice of Travancore from 1905 to 1910. He was also the first President of the Hindu Religious and Charitable Endowments Department, Madras Presidency.