| Tourney Name: | IIHF U18 World Championship Division III |
| Year: | 2018 |
| Country: | Turkey |
| Country2: | New Zealand |
| Dates: | 26 March – 1 April 2018 26–28 April 2018 |
| Num Teams: | 9 |
| Prevseason: | 2017 |
| Nextseason: | 2019 |
The 2018 IIHF World U18 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.
| Tourney Name: | IIHF U18 World Championship Division III A |
| Year: | 2018 |
| Size: | x240px |
| Country: | Turkey |
| Dates: | 26 March – 1 April 2018 |
| Num Teams: | 6 |
| Venues: | 1 |
| Cities: | 1 |
| Type: | ih18 |
| Winners: | BEL |
| Second: | MEX |
| Third: | BUL |
| Games: | 15 |
| Goals: | 108 |
The Division III A tournament was played in Erzurum, Turkey, from 26 March to 1 April 2018.[1]
| Team | Qualification | |
|---|---|---|
| placed 6th in 2017 Division II B and were relegated | ||
| placed 2nd in 2017 Division III A | ||
| placed 3rd in 2017 Division III A | ||
| placed 4th in 2017 Division III A | ||
| hosts; placed 5th in 2017 Division III A | ||
| placed 1st in 2017 Division III B and were promoted |
All times are local. (Further-eastern European Time – UTC+3)
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| Tourney Name: | IIHF U18 World Championship Division III B |
| Year: | 2018 |
| Size: | x240px |
| Country: | New Zealand |
| Dates: | 26–28 April 2018 |
| Num Teams: | 3 |
| Venues: | 1 |
| Cities: | 1 |
| Type: | ih18 |
| Winners: | NZL |
| Second: | HKG |
| Third: | RSA |
| Games: | 3 |
| Goals: | 24 |
The Division III B tournament was played in Queenstown, New Zealand, from 26 to 28 April 2018.[2]
| Team | Qualification | |
|---|---|---|
| hosts; placed 6th in 2017 Division III A and were relegated | ||
| placed 2nd in 2017 Division III B | ||
| placed 3rd in 2017 Division III B |
All times are local. (New Zealand Standard Time – UTC+12)