The Tamil Nadu government has announced its holidays for 2023. A total of 24 days of leave is granted. In the months of January and April, a maximum of five days are set aside for public holidays.
| S. No | Public Holidays 2023 | Date | Day |
| 1 | New Years Day | 01.01.2023 | Sunday |
| 2 | Pongal | 15.01.2023 | Sunday |
| 3 | Thiruvalluvar Day | 16.01.2023 | Monday |
| 4 | Uzhavar Thirunal | 17.01.2023 | Tuesday |
| 5 | Republic Day | 26.01.2023 | Thursday |
| 6 | Thai Poosam | 05.02.2023 | Sunday |
| 7 | Telugu New Year Day | 22.03.2023 | Wednesday |
| 8 | Annual Closing Accounts – Banks | 01.04.2023 | Saturday |
| 9 | Mahaveer Jayanti | 04.04.2023 | Tuesday |
| 10 | Good Friday | 07.04.2023 | Friday |
| 11 | Tamil New Year / B.R Ambedkar Birthday | 14.04.2023 | Friday |
| 12 | Ramzan | 22.04.2023 | Saturday |
| 13 | May Day | 01.05.2023 | Monday |
| 14 | Bakrid | 29.06.2023 | Thursday |
| 15 | Muharram | 29.07.2023 | Saturday |
| 16 | Independance Day | 15.08.2023 | Tuesday |
| 17 | Krishna Jayanthi | 06.09.2023 | Wednesday |
| 18 | Vinayagar Chathurthi | 17.09.2023 | Sunday |
| 19 | Milad-Un-Nabi | 28.09.2023 | Thursday |
| 20 | Gandhi Jayanthi | 02.10.2023 | Monday |
| 21 | Ayutha Poojai | 23.10.2023 | Monday |
| 22 | Vijaya Dasami | 24.10.2023 | Tuesday |
| 23 | Deepavali | 12.11.2023 | Sunday |
| 24 | Christmas | 25.12.2023 | Monday |