Nalgonda is a town and a municipality in Nalgonda district in the Indian state of Andhra Pradesh. Its name is derived from two Telugu words Nalla (Black) and Konda (hill). Nalgonda in the past is referred to as Nilagiri. During the period of Bahamani kingdom, it had been renamed as Nallagonda. Later in Nizam rule, during the later kings rule the name has been transformed in to Nalgonda (for official uses). But in popular culture its called as Nallagonda only. Recently A.P. govt. has changed its name to Nalgonda for convenience (for official purpose).
But the popular name, Nallagonda, with which it is referred to by one and all and finds the name frequently even in "Poetry of the famous Telangana Liberation Struggle", should be restored back in view of its history and popular usage