Kadayanallur is a Municipal Township in Tenkasi Taluk, Tirunelveli District, Tamil Nadu State, India. It is located in the foothills of the Western Ghats near the Courtallam Waterfalls and Tenkasi. It is 135 KM from Madurai, 70 KM from Thirunelveli and 100 KM from Thiruvananthapuram. Kadayanallur is very well connected and is accessible by National High way road and train from Madurai.
    The nearest International Airport is Thiruvananthapuram-TRV is accessible by 5 Hrs Drive. The state capital, Chennai (Madras MAA ) is accessible by overnight ride.
    It is famous for saral (drizzling), which occurs yearly from May to August. It is also known for its vast paddy and coconut fields.
    9.08°N  77.35°E
    Postal code 627751 Telephone code 46332
    Population  75612 (as per Census 2001) More than 75% Muslims
    Household 16554.
    Area 52 Sq. Km.
    No. of Streets 136
    Kadayanallur is one of the 234 Tamilnadu state Assembly Constituency and is part of Tenkasi Indian Parlimentary Constituency.