The 2019 Canberra Challenger was a professional tennis tournament played on outdoor hard courts. It was the fourth edition of the tournament which was a part of the 2019 ATP Challenger Tour. It took place in Canberra, Australia between 6 and 12 January 2019.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Spain | Roberto Carballés Baena | 73 | 1 | |
 Poland | Hubert Hurkacz | 86 | 2 | |
 Czech Republic | Jiří Veselý | 89 | 3 | |
 Belarus | Ilya Ivashka | 91 | 4 | |
 Australia | Marc Polmans | 166 | 5 | |
 Korea, Republic of | Chung Yun-seong | 274 | 6 | |
 France | Elliot Benchetrit | 275 | 7 | |
 China | Li Zhe | 277 | 8 | |
 Bosnia and Herzegovina | Tomislav Brkić | 302 | 9 | |
| China | Wu Di | 307 | 10 | |
| France | Tristan Lamasine | 309 | 11 | |
| Australia | Bradley Mousley | 327 | 12 | |
| Roy Smith | 328 | 13 | ||
 Argentina | Renzo Olivo | 331 | 14 | |
| France | Tak Khunn Wang | 333 | 15 | |
| France | Hugo Grenier | 341 | 16 |
The following players received wildcards into the singles main draw:
Aaron Addison Thomas Bosancic Tom Evans James Frawley Bradley MousleyThe following players received entry into the singles main draw using their ITF World Tennis Ranking:
The following players received entry into the singles main draw as alternates:
David Barclay Maxime Chazal Matthew RomiosThe following players received entry from the qualifying draw:
Fabrice Martin Lucas VuradinSee main article: 2019 Canberra Challenger – Singles.
Hubert Hurkacz def. Ilya Ivashka 6–4, 4–6, 6–2.See main article: 2019 Canberra Challenger – Doubles.
Marcelo Demoliner / Hugo Nys def. 
André Göransson / Sem Verbeek 3–6, 6–4, [10–3].
