Here is the list of holidays announced by the Government of Tamil Nadu for the year of 2023. There are 24 public holidays in TN and most of the falls on Sundays. The government announced Thaipusam /Thai Poosam a festival that celebrates Lord Murugan’s birthday as holiday. The TN public holidays are applicable for all government offices, schools and banks.
| SI | DATE | DAY | HOLIDAYS | REMARKS | |
| 1 | 01.01.2023 | Sun | New Year’s Day | Public Holiday | |
| 2 | 15.01.2023 | Sun | Pongal | Festival Holiday | |
| 3 | 16.01.2023 | Mon | Thiruvalluvar Day | Festival Holiday | |
| 4 | 17.01./2023 | Tue | Uzhavar Thirunal | Festival Holiday | |
| 5 | 26.01.2023 | Thu | Republic Day | Public Holiday | |
| 6 | 05.02.2023 | Sun | Thai Poosam | Festival Holiday | |
| 7 | 22.03.2023 | Wed | Telugu New Year | Festival Holiday | |
| 8 | 04.04.2023 | Tue | Mahavir Jayanti | Festival Holiday | |
| 9 | 07.04.2023 | Fri | Good Friday | Festival Holiday | |
| 10 | 14.04.2023 | Fri | Dr. Ambedkar Jayanti | Public Holiday | |
| 11 | 14.04.2023 | Fri | Tamil New Year | Festival Holiday | |
| 12 | 22.04.2023 | Sat | Ramzan | Festival Holiday | |
| 13 | 01.05.2023 | Mon | May Day | Public Holiday | |
| 14 | 29.06.2023 | Thu | Bakrid / Eid al Adha | Festival Holiday | |
| 15 | 29.07.2023 | Sat | Muharram | Festival Holiday | |
| 16 | 15.08.2023 | Tue | Independence Day | Public Holiday | |
| 17 | 06.09.2023 | Wed | Janmashtami | Festival Holiday | |
| 18 | 17.09.2023 | Sun | Ganesh Chaturthi | Festival Holiday | |
| 19 | 28.09.2023 | Thu | Eid e Milad/Milad-un-Nabi | Festival Holiday | |
| 20 | 02.10.2023 | Mon | Gandhi Jayanti | Public Holiday | |
| 21 | 23.10.2023 | Mon | Maha Navami/Ayutha Pooja | Festival Holiday | |
| 22 | 24.10.2023 | Tue | Vijaya Dashami | Festival Holiday | |
| 23 | 12.11.2023 | Sun | Diwali | Festival Holiday | |
| 24 | 25.12.2023 | Mon | Christmas Day | Festival Holiday |