St. John’s Church is located inside the Vellore Fort, Tamil Nadu State, India. The Church was raised in 1846 by the Government of Madras for the officers and men of the East India Company military station. The church is called after St. John the Evangelist. However, the church was never officially consecrated and hence not officially named as St. John’s Church. St. John's Church is the oldest standing church in the Vellore Diocese. The church stands inside the Vellore Fort, which is under the control of the Archaeological Survey of India, along with the Vijaynagar period Jalakanteswarar Temple, Tippu Mahal, Hyder Mahal, Candy Mahal, Badhusha Mahal and the Begum Mahal.

Vellore Fort is a large 16th-century fort situated in heart of the Vellore city, in the state of Tamil Nadu, India built by the Emperors of Vijayanagara. The fort was at one time the imperial capital of the Aravidu Dynasty of the Vijayanagara Empire. The fort is known for its grand ramparts, wide moat and robust masonry.