| Vadalur | |
| Settlement Type: | Town |
| Pushpin Map: | India Tamil Nadu |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Coordinates: | 11.5552°N 79.5551°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Cuddalore |
| Government Type: | 2nd-Grade Municipality |
| Governing Body: | Vadalur Municipality |
| Unit Pref: | Square kilometres |
| Population Total: | 39,514 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Population Demonym: | Tamilian, Vadalurian |
| Population Footnotes: | [1] |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official Language |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code: | 607303 |
| Registration Plate: | TN-31,TN-91[2] |
| Website: | https://www.tnurbantree.tn.gov.in/vadalur/ |
| Official Name: | Vadalur Municipality |
| Area Land Km2: | 19.93 |
| Leader Title: | Chief Minister |
| Leader Name: | Thiru. M.K. Stalin |
| Leader Party: | Dravida Munnetra Kazhagam |
| Leader Title1: | Collector |
| Leader Name1: | Mr.Sibi Adithya Senthil Kumar IAS |
| Blank Name Sec1: | Wards |
| Blank Info Sec1: | 27 |
| Blank1 Name Sec1: | Revenue Villages |
| Blank1 Info Sec1: | 3 |
| Blank Name Sec2: | Member of Parliament |
| Blank Info Sec2: | Thiru.M.K.Vishnu Prasad |
| Blank1 Name Sec2: | Member of the Legislative Assembly |
| Blank1 Info Sec2: | Thiru. M.R.K. Panneerselvam |
| Area Code: | 04142 |
| Population Density Rank: | 397 |
| Established Title1: | Upgraded as 2nd Grade Municipality |
| Established Date1: | 14 October 2021 |
Vadalur is a town and 2nd-grade municipality in Cuddalore district, Tamil Nadu. It is 208km (129miles) from Chennai, the state capital of Tamil Nadu.
Ramalinga Swamigal, often called Vallalar, established the Sathyagnana Sabhai. He built a temple which is open year-round. Thousands of visitors attend festivals and monthly puja dates at this temple. Vadalur is well connected by rail and road, and it provides transport to major cities like Trichy, Chennai, Tanjore, Puducherry, and Kumbakonam.
The Thai Poosam (Tamil: தைப்பூசம்) celebration in January is a festival held annually in Vadalur. The Swamigal sang thousands of songs called Thiru Arutppa. The district was named after him for a while. On Thai Poosam, thousands of devotees from all over Tamil Nadu visit the temple. More than 10,000 market stalls are available for at least a week for the pilgrims. Food, water, and fresh juice are available for devotees to purchase.
As of the 2011 census,[3] Vadalur had a population of 39,514. Males constitute 51% of the population and females 49%. Vadalur has an average literacy rate of 70%, higher than the national average of 59.5%. The male literacy rate is 78%, and the female literacy rate is 61%. In Vadalur, 11% of the population is under six years of age. The literacy level is high because of the private schools and government schools.
Vadalur runs a ceramic factory called Neycer which employs many people in the city.
Agriculture plays an important role in Vadalur's economy. The SIDCO Industrial Estate creates many job opportunities for the people of Vadalur. NLC's coal loading station is located in Vadalur as well. Small businesses also help in improving Vadalur's economic development.[4]
| 06121 Cuddalore Port Junction - Salem Junction DEMU(via Neyveli, Vridhachalam, Attur) | 05:27 | 05:28 | Runs daily | Active | |
| 06889 Tiruppadripuliyur - Tiruchirapalli DEMU(via Vadalur, Vridhalachalam Jn, Ariyalur, Srirangam) | 06:41 | 06:42 | Runs daily | Active | |
| 16530 Karaikkal - SMVT Bangalore Express(via Vadalur, Vridhalachalam, Attur, Salem, Dharmapuri, Hosur) | 09:39 | 09:40 | Runs daily | Active | |
| 16529 SMVT Bangalore - Karaikkal Express (via Vadalur, Cuddalore, Chidambaram, Sirkazhi,Mayiladuthurai, Thiruvarur, Nagapattinam, Nagore) | 16:52 | 16:53 | Runs daily | Active | |
| 06890 Tiruchirapalli - Tiruppadripuliyur DEMU (via Srirangam, Ariyalur, Vridhachalam Jn, Vadalur, Kurinjipadi) | 19.35 | 19:36 | Runs daily | Active | |
| 06122 Salem Junction - Cuddalore Port Junction DEMU(via Attur, Vridhachalam, Neyveli) | 21:42 | 21:43 | Runs daily | Active |
Buses are available from Vadalur to major cities at all times.
Satya Gnana Sabha is a major tourist and spiritual center in Vadalur. Vadular is also home to Iyyan Lake and the Sacred Heart Church. The NLC mines can be seen from the observation site in the Kattukollai area of Vadalur.
Chennai (the state capital) is located directly north of Vadalur. Trichy and Salem are located west of Vadalur. Cuddalore (District Capital) and Puducherry are to the east. Kumbakonam and Thanjavur is to the south.