The 2019 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 Sofia, Bulgaria, from 25 to 31 March 2019. At the time of the tournament, Iceland was awarded second place; however, they ended up sharing the medal with Turkey.
4 referees and 7 linesmen are selected for the tournament.
<section begin=Division III A/><section end=Division III A/>
All times are local (UTC+2).
<small>Source: IIHF </small>
The Division III B tournament was played in Cape Town, South Africa, from 9 to 12 April 2019.
3 referees and 4 linesmen are selected for the tournament.
<section begin=Division III B/><section end=Division III B/>
All times are local (UTC+2).
<small>Source: IIHF </small>