Thuckalay or Thakkalai is a town in Kanyakumari district of Tamil Nadu, India. Thuckalay comes under the Padmanabhapuram Municipality. Thuckalay is the administrative headquarters of Kalkulam Taluk. The Revenue Divisional Office is located in Mettukadai. Thuckalay is connected by road from both Thiruvananthapuram (51 km) and Nagercoil (17 km). The nearest railway station is located in Eraniel, which is approximately 5 km from Thuckalay. The nearest airport is the Trivandrum International Airport, which is approximately 51 km from Thuckalay.