He was 66.
He had been not keeping well for the last couple of months and suffered a cardiac arrest this morning after which he was taken to Manipal Hospital in Visakhapatnam, nearly 66 kms from here, family members said.
Raju, who hailed from the titular family of Vizianagaram, started his political career with TDP in 1983 and won state assembly elections the same year.
He first became Member of Parliament on a TDP ticket in 1984 from Bobbili constituency in Vizianagaram district and won the same seat as a Congress candidate in 1991.
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Condoling the death of Ananda Gajapathi Raju, Telangana BJP President and MLA G Kishan Reddy recalled his services to the people through a charitable trust.
"His death is a loss to the Telugu people," Reddy Ssaid.