| Posted date 23-10-2020 List of Govt Holidays 2021 in Tamil Nadu ( Tentative GO to be received) | |
| January 1, Friday, 2021 | New Years Day |
| January 14, Thursday, 2021 | Pongal |
| January 15, Friday, 2021 | Thiruvalluvar Day |
| January 16, Saturday, 2021 | Uzhavar Thirunal |
| January 26, Tuesday, 2021 | Republic Day |
| April 1, Thursday 2021 | Annual closing of Accounts- Banks |
| April 2, Friday, 2021 | Good Friday |
| April 13, Tuesday, 2021 | Telugu New Year |
| April 14, Wednesday, 2021 | Tamil New Year & Dr Ambedkar Jayanti |
| April 25, Sunday, 2021 | Mahavir Jayanti |
| May 1, Saturday, 2021 | May Day |
| May 12, Wednesday, 2021 | Idul Fitr |
| July 20, Tuesday, 2021 | Bakrid / Eid al Adha |
| August 10, Tuesday, 2021 | Muharram |
| August 15, Sunday, 2021 | Independence Day |
| August 30, Monday, 2021 | Krishna Jayanthi |
| September 10, Friday, 2021 | Ganesh Chaturthi |
| October 2, Saturday, 2021 | Gandhi Jayanti |
| October 14, Thursday, 2021 | Ayudha Pooja |
| October 15, Friday, 2021 | Vijaya Dashami |
| October 18, Monday, 2021 | Eid e Milad |
| November 4, Thursday, 2021 | Diwali |
| December 25, Saturday, 2021 | Christmas Day |
