| Tourney Name: | IIHF U18 World Championship Division III |
| Year: | 2017 |
| Size: | 210 |
| Country: | Taiwan |
| Country2: | Mexico |
| Dates: | 21–27 March 2017 17–19 March 2017 |
| Num Teams: | 9 |
| Venues: | 2 |
| Cities: | 2 |
| Prevseason: | 2016 |
| Nextseason: | 2018 |
The 2017 IIHF World U18 Championship Division III was two international under-18 men's ice hockey tournaments organized by the International Ice Hockey Federation. The Division II A and Division II B tournaments represent the sixth and the seventh tier of the IIHF World U18 Championship.
| Tourney Name: | IIHF World U18 Championship Division III A |
| Year: | 2017 |
| Country: | Taiwan |
| Dates: | 21–27 March |
| Num Teams: | 6 |
| Venues: | 1 |
| Cities: | 1 |
| Games: | 15 |
| Goals: | 121 |
| Scoring Leader: |  Huang Qianyi |
| Points: | 20 |
| Website: | IIHF.com |
The Division III A tournament was played in Taipei, Taiwan, from 21 to 27 March 2017.[1]
| Team | Qualification | |
|---|---|---|
| placed 6th in 2016 Division II B and were relegated | ||
| placed 2nd in 2016 Division III A | ||
| placed 3rd in 2016 Division III A | ||
| placed 4th in 2016 Division III A | ||
| hosts; placed 5th in 2016 Division III A | ||
| placed 1st in 2016 Division III B and were promoted |
4 referees and 7 linesmen were selected for the tournament.[2]
Stefan Hogarth
Bartosz Kaczmarek
Shunsuke Ichikawa
Dustin McCrank
Simone Mischiatti
Laurynas Stepankevičius
Maarten van den Acker
All times are local. (National Standard Time – UTC+8)----------------
| Tourney Name: | IIHF World U18 Championship Division III B |
| Year: | 2017 |
| Country: | Mexico |
| Dates: | 17–19 March |
| Num Teams: | 3 |
| Venues: | 1 |
| Cities: | 1 |
| Games: | 3 |
| Goals: | 26 |
| Scoring Leader: |  Jorge Ortiz |
| Points: | 6 |
| Attendance: | 900 |
| Website: | IIHF.com |
The Division III B tournament was played in Mexico City, Mexico, from 17 to 19 March 2017.[3]
| Team | Qualification | |
|---|---|---|
| hosts; placed 6th in 2016 Division III A and were relegated | ||
| placed 2nd in 2016 Division III B | ||
| placed 3rd in 2016 Division III B |
2 referees and 3 linesmen were selected for the tournament.[4]
Sean Fernandez Fraser Lawrence Ryan Madson Kelsey Mahoney Sem Ramirez
All times are local. (Central Standard Time – UTC–6)