Kalkulam is a small village located in Kalkulam taluk, Kanyakumari district, Tamil Nadu, India.

The taluk was among several in Thiruvananthapuram district that with the passage of the States Reorganisation Act of 1956 were transferred from Thiruvananthapuram district, Travancore-Cochin State to the newly created Kanyakumari district of Madras State (the latter later renamed as Tamil Nadu State).

Kalkulam Taluk was part of the Princely state Travancore Kingdom; The latter which subsequently became part of the then Travancore-Cochin State.

Part of The States Reorganisation Act of 1956 aligned state boundaries on linguistic affiliations.

Thovalai, Kalkulam, Vilavancode, and Agastheeswaram Taluks were transferred from Thiruvananthapuram District of the Travancore-Cochin State to Kanyakumari district, Madras State. Madras was later renamed as Tamil Nadu).

One of the temples of Shivalaya ottam is at Kalkulam.