The 2019 IIHF U20 Challenge Cup of Asia Division I was an international men's under-20 ice hockey tournament run by the International Ice Hockey Federation (IIHF). The tournament took place between 3 December and 6 December 2018 in Kuala Lumpur, Malaysia and was the first edition held under the IIHF Challenge Cup of Asia series of tournaments. The tournament made up the second level of competition sitting below the 2019 IIHF U20 Challenge Cup of Asia. Thailand won the tournament after finishing first in the standings. Mongolia finished in second place and Indonesia finished third.
The tournament consisted of a single round-robin with each team competing in three games.[5] Thailand won the tournament after winning all three of their games to finish at the top of the standings.[6][7] Mongolia finished second after losing only to Thailand and Indonesia finished in third.[7][8] Nathaphat Luckanatinakorn of Thailand led the tournament in scoring with 14 points and was named best forward by the IIHF Directorate.[7][9] Thailand's Phandaj Khuhakaew and Chayutapon Kulrat were named most valuable player and top defenceman respectively and Ahmad Alsaegh of Kuwait was named best goaltender.[7][10] Thailand's Patchara Trirat finished as the tournaments leading goaltender with a save percentage of 100.00.[11]