René Tantely Gabrio Andrianarivo (25 May 1954 – 31 August 2023) was a Malagasy politician who was Prime Minister of Madagascar from 23 July 1998 to 31 May 2002, under President Didier Ratsiraka.

During Ratsiraka's first period in office (the Second Republic), Andrianarivo served in the government as Minister of Industry, Energy and Mines.

[13] Andrianarivo argued that, despite Ravalomanana's nomination of Sylla as Prime Minister, he remained legally Prime Minister until he was detained on 27 May 2002, due to the absence of a decree abrogating his nomination up to that point; he said that it had been necessary to withdraw the money for the payment of wages and other administrative purposes.

In Ravalomanana's 2003 end of the year speech, he revealed that Andrianarivo was allowed to seek medical treatment abroad.

[10] On 3 May 2007, it was announced that about $2.3 million held by Andrianarivo in Switzerland was unfrozen and was again available to him, following a money laundering investigation that was closed due to lack of evidence.