Kalna or Ambika Kalna is a town in the Purba Bardhaman district of West Bengal, India. It is the headquarters of the Kalna subdivision, situated on the western bank of the Bhāgirathi. The city is more popularly known as Ambika Kalna, named after the goddess Kali, Maa Ambika. It has numerous historical monuments, such as the Rajbari (the palace), and 108 Shiva temples. The city of Kalna is 60 kilometres (37 mi) from Bardhaman.