Church of Our Lady of Light (Tamil: பிரகாச மாதா ஆலயம்) is a Roman Catholic shrine in Chennai, India. It is commonly called as Luz Church by the locals, which derives from the Portuguese name Nossa Senhora da Luz. Built in 1516 by the Portuguese, it is one of the oldest Churches in the city and its foundation stone marks as one of the oldest European monuments in India. The history of the church dates back to the 16th-century legend of safe arrival to land by missionaries. The church is located very near to the Santhome Basilica, where Apostle Thomas is believed to be buried.