The 2025 IIHF U18 World Championship Division III consists of two international under-18 ice hockey tournaments organized by the International Ice Hockey Federation.

Divisions III A and III B represent the sixth and the seventh tier of the IIHF World U18 Championship.

The Division III Group A tournament is being played in Mexico City, Mexico, from 2 to 8 March 2025.

[1][2] All times are local (Time in Mexico / Zona Centro – UTC-6).

The Division III Group B tournament was played in Bangkok, Thailand, from 28 February to 6 March 2025.