Giddaluru is a town in the Prakasam district of the Indian state of Andhra Pradesh. It is the mandal headquarters of the Giddaluru mandal in Markapur revenue division. It was part of kurnool district till 1969 later it was merged into Prakasam district in 1970. Till 2008 it was under Nandyal parliament segment after delimitation it was moved to Ongole MP segment. Giddalur is also known as "3 zilla la muddu bidda " because during the Britishers rule it was in kadapa district later moved to kurnool then in 1970 merged in prakasam district. Giddalur is the only constituency in coastal districts which has Rayalseema culture,slang and traditions. Giddalur town has good transport connectivity to Nandyal, Markapur, Podili, Ongole, Kurnool, Kadapa.