Nauris Miezis was the top scorer for Latvia with 10 points. Francis Lācis added eight points and Kārlis Lasmanis had four points.
Latvia has won all four of its previous matches so far, beating Lithuania (21:14), the Netherlands (21:12), China (22:8) and the USA (21:19).
Later on Friday, the Latvian national team will play one of the main contenders, Serbia. The match will start at 20:05 Latvian time.
The Latvian national team will conclude the group tournament on Sunday against Poland.
Six of the eight teams will reach the Olympic knockout tournament, with the top two automatically qualifying for the semi-finals, while the 3rd-6th place finishers will play in the quarter-finals. The Latvian team has already guaranteed its place in the knockout tournament.
The Latvian team includes Tokyo Games champions Nauris Miezis and Kārlis Lasmanis, as well as Olympic debutants Francis Lācis and Zigmārs Raimo.