The 2023 Formula 4 South East Asia Championship was the fifth season of the Formula 4 South East Asia Championship and the first one since 2019. Top Speed was appointed as the new organizer and promoter as the series switched to the Tatuus F4-T421 car, the Abarth engine and the Giti tires.
The schedule consisted of 9 races over 3 rounds. Additionally, a non-championship Macau Formula 4 Race event was held during the first week of the 70th Macau Grand Prix.
Points were awarded as follows.
Ahead of each event, the teams nominated two drivers that accumulated teams' points.
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