Nallapadu is a suburb of Guntur in Guntur district of Andhra Pradesh, India. It is situated on the west side of Guntur from which the State Highway (India) 50 passes through. It lies at the base of the Kondavidu Hills and is also known as Narasinghapuram. It is the site of a Railway Sleeper factory and Rail Vihar, a residential colony for the officers and staff of the Guntur division of South Central Railway Zone (India).
Nallapadu has quite a few ancient temples, the most important of which is the Agastheswaraswamy Temple.