| Date: | 18–24 February |
| Draw: | 48S / 16D |
| Surface: | Hard |
| Location: | Bangkok, Thailand |
| Champs: |  James Duckworth |
| Champd: |  Li Zhe / Gonçalo Oliveira |
The 2019 Bangkok Challenger II was a professional tennis tournament played on hard courts. It was part of the 2019 ATP Challenger Tour. It took place in Bangkok, Thailand between 18 and 24 February 2019.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 India | Prajnesh Gunneswaran | 97 | 1 | |
 Japan | Tatsuma Ito | 141 | 2 | |
| Henri Laaksonen | 146 | 3 | ||
| Japan | Yūichi Sugita | 163 | 4 | |
| Japan | Hiroki Moriya | 177 | 5 | |
 Kazakhstan | Aleksandr Nedovyesov | 188 | 6 | |
| Tobias Kamke | 205 | 7 | ||
| China | Zhang Ze | 208 | 8 | |
| Japan | Go Soeda | 212 | 9 | |
 Italy | Gianluca Mager | 215 | 10 | |
| Australia | Marc Polmans | 216 | 11 | |
 Serbia | Viktor Troicki | 221 | 12 | |
 Israel | Dudi Sela | 223 | 13 | |
 Spain | Alejandro Davidovich Fokina | 225 | 14 | |
| Australia | James Duckworth | 231 | 15 | |
 Korea, Republic of | Kwon Soon-woo | 235 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw using their ITF World Tennis Ranking:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
See main article: 2019 Bangkok Challenger II – Singles.
James Duckworth def. Alejandro Davidovich Fokina 6–4, 6–3.See main article: 2019 Bangkok Challenger II – Doubles.
Li Zhe / Gonçalo Oliveira def. Enrique López Pérez / Hiroki Moriya 6–2, 6–1.
Thanapet Chanta
