Kalyandurg, also called Kalyanadurgam, is a town in Anantapur district of the Indian state of Andhra Pradesh.

As per The imperial gazetteer of India, Rayadurg, Chitradurga and Kalyandurg are the three important forts that were ruled by Boya Palegars.

Kalyandurg was a taluk of Anantapur district in Madras province which was earlier a part of Dharmavaram that was separated in 1893.

[7] In the vicinity of Kalyanadurg, several hundred megalithic monuments, such as dolemnoid cists and cairn circles are situated at the foothills and the slopes of the Akkamma Vari hills.

[11] The municipal body oversees the supply of water with 70 litres per capita per day, in the form 453 public taps and 66 bore–wells.

V. Ushashri Charan[13] of YSR Congress Party is the present MLA representing Kalyandurg (Assembly constituency).