The Pondicherry – Krishnagiri national highway, NH 66 and the Villupuram – Mangalore National highway NH 234 pass through Tiruvannamalai. The town has eight arterial roads that connects it to other towns. The Tiruvannamalai municipality maintains a total length of 75.26 km (46.76 mi). The town has 9.068 km (5.635 mi) concrete roads, 50.056 km (31.103 mi) BT roads, 7.339 km (4.560 mi) of WBM roads and 8.797 km (5.466 mi) earthern roads. A total of 452 roads is maintained by the State Highways Department.
Tiruvannamalai is served by town bus service, which provides connectivity within the town and the suburbs. There are private operated mini-bus services that cater to the local transport needs of the town. The main bus stand covers an area of 2 acres (8,100 m) and is located in the heart of the town. There are regular inter-city bus services to Tiruvannamalai. The Tamil Nadu State Transport Corporation operates daily services connecting various cities to Tiruvannamalai. The Corporation operates a computerised reservation centre in the bus stand of the town. The State Express Transport Corporation operates long distance buses connecting the town to important cities like Chennai, Pondicherry and Bengaluru. The major inter city bus routes from the town are to cities and towns like Chennai, Villupuram, Tirukoilur, Avalurpet, Kanji, Chengam, Sathanur, Sankarapuram and Manalurpet.
Tiruvannamalai railway station is located in the rail head from Vellore to Villupuram. The Madurai-Tirupathi bi-weekly expresses connects Tiruvannamalai to Madurai and Tirupathi in either directions. There are also passenger trains running either side from Vellore to Villupuram.
The nearest domestic and international airports are at Chennai located 155 km (96 mi) and Bangalore located 170 km (110 mi) away from the town
