The move comes after Friday's 1-0 defeat at home to Northern Ireland in Georgia's opening match in the Nations League.
"The Georgian national football team will be coached by Georgian specialist Ramaz Svanadze until the end of 2028," the country's federation said.
"Svanadze will replace Frenchman Willy Sagnol as head coach."
Former Bayern Munich right-back and France international Sagnol took over Georgia in February 2021 and guided them to a first European Championship appearance three years later.
"Thank you, Willy Sagnol, for every minute spent with the Georgian national team and for the emotions we shared together along this historic path," the federation added.
Svanadze, 45, was previously in charge of the Georgian under-21 side, with whom he reached the European Championship finals on two occasions.
UEFA Nations League
The UEFA Nations League 2026/27 is contested by the national teams of 54 of UEFA's member associations. They're divided into four leagues based on the rankings of the previous edition, with Leagues A, B, and C featuring sixteen teams each, divided into four groups of four, while League D features six teams divided into two groups of three. It begins in September 2026, with the finals in June 2027.
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