Andhra Mahasabha (Telugu: ఆంధ్ర మహాసభ, IAST: Āndhra mahāsabha) was a people's organisation in the erstwhile Hyderabad state of India. It was an association started by Telugu people of Telangana region against Nizam rule. The people of Telangana formed the Andhra Mahasabha as they could not tolerate the injustice being done to the Telugu language and Telugu culture. In the late 1920s, under the leadership of Madapati Hanumantha Rao, the Telugu people united and formed a union and organized 13 Andhra Mahasabhas from 1930 to 1945. The activities of the Andhra Mahasabha in the Telangana region created awareness among the people against the Nizam and led to the armed struggle in Telangana. Chief among the people who led the Andhra Mahasabha were: Madapati Hanumantha Rao, Ravi Narayana Reddy, Suravaram Prathapareddy, Baddam Ella Reddy, Burgula Ramakrishna Rao, Dasarathi Krishnamacharya, Susarla Srirama Narasimham, Pulijala Venkatarangarao, Allampalli Venkatarama Rao, Kaloji Narayana Rao, Konda Venkata Rangareddy, Vattikota Alvaraswami, Potlapalli. Rama Rao, Arutla Ramachandra Reddy, and many more.
The organization spearheaded people's awareness and people's movements among the Telugu-speaking populace of the state and eventually joined hands with the Communist Party of India to launch the Telangana rebellion.