The 2015 IIHF U18 World Championship Division III was two international under-18 ice hockey tournaments organised by the International Ice Hockey Federation.

The Division III A and Division III B tournaments represent the sixth and the seventh tier of the IIHF World U18 Championship.

The Division III A tournament was played in Taipei City, Taiwan, from 22 to 28 March 2015.

(National Standard Time – UTC+8) The Division III B tournament was played in Auckland, New Zealand, from 17 to 19 March 2015.

(New Zealand Daylight Time – UTC+13)