| Date: | 31 December – 6 January |
| Edition: | 1st |
| Draw: | 48S / 4Q / 16D |
| Surface: | Hard |
| Location: | Orlando, Florida, United States |
| Champs: |  Marcos Giron |
| Champd: | Romain Arneodo /  Andrei Vasilevski |
The 2019 Orlando Open was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Orlando, Florida, United States between 31 December 2018 and 6 January 2019.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Darian King | 198 | 1 | ||
| Mitchell Krueger | 228 | 2 | ||
| Thiemo de Bakker | 242 | 3 | ||
 Canada | Filip Peliwo | 243 | 4 | |
 Slovakia | Norbert Gombos | 247 | 5 | |
| Belarus | Uladzimir Ignatik | 250 | 6 | |
 Dominican Republic | Roberto Cid Subervi | 251 | 7 | |
| JC Aragone | 254 | 8 | ||
| Dennis Novikov | 257 | 9 | ||
 France | Benjamin Bonzi | 261 | 10 | |
| Kevin King | 262 | 11 | ||
| Gastão Elias | 263 | 12 | ||
| Nino Serdarušić | 264 | 13 | ||
| France | Mathias Bourgue | 265 | 14 | |
 Spain | Bernabé Zapata Miralles | 266 | 15 | |
| France | Johan Tatlot | 269 | 16 |
The following players received wildcards into the singles main draw:
Jared Hiltzik Michael Redlicki Sam Riffice Alex Rybakov Evan SongThe following players received entry into the singles main draw using their ITF World Tennis Ranking:
Tom Jomby Fabien Reboul
João SouzaThe following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
See main article: 2019 Orlando Open – Singles.
Marcos Giron def. Darian King 6–4, 6–4.See main article: 2019 Orlando Open – Doubles.
Andrei Vasilevski def. Gonçalo Oliveira / 
Andrea Vavassori 7–6(7–2), 2–6, [15–13].