| Date: | 31 December 2018 – 5 January 2019 |
| Edition: | 27th |
| Category: | ATP Tour 250 series |
| Draw: | 32S / 16D |
| Surface: | Hard / outdoor |
| Location: | Doha, Qatar |
| Venue: | Khalifa International Tennis and Squash Complex |
| Champs: |  Roberto Bautista Agut[1] |
| Champd: |  David Goffin /  Pierre-Hugues Herbert[2] |
| Main Name: | ATP Qatar Open |
The 2019 Qatar Open (also known as 2019 Qatar ExxonMobil Open for sponsorship reasons) was a men's tennis tournament played on outdoor hard courts. It was the 27th edition of the Qatar Open, and part of the ATP Tour 250 series of the 2019 ATP Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar, from 31 December 2018 until 5 January 2019. Seventh-seeded Roberto Bautista Agut won the singles title.
See main article: 2019 Qatar ExxonMobil Open – Singles.
Roberto Bautista Agut defeated 
Tomáš Berdych, 6–4, 3–6, 6–3See main article: 2019 Qatar ExxonMobil Open – Doubles.
David Goffin / Pierre-Hugues Herbert defeated Robin Haase / Matwé Middelkoop, 5–7, 6–4, [10–4]| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Serbia | Novak Djokovic | 1 | 1 | |
 Austria | Dominic Thiem | 8 | 2 | |
 Russian Federation | Karen Khachanov | 11 | 3 | |
 Italy | Marco Cecchinato | 20 | 4 | |
 Georgia | Nikoloz Basilashvili | 21 | 5 | |
| Belgium | David Goffin | 22 | 6 | |
| Spain | Roberto Bautista Agut | 24 | 7 | |
| Spain | Fernando Verdasco | 28 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry by a lucky loser:
Richard Gasquet → replaced by Stan Wawrinka
Mikhail Kukushkin → replaced by Andrey Rublev Feliciano López → replaced by Paolo Lorenzi| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Austria | Oliver Marach | Mate Pavić | 7 | 1 | ||
 United Kingdom | Jamie Murray |  Brazil | Bruno Soares | 14 | 2 | |
| Nikola Mektić | Austria | Alexander Peya | 30 | 3 | ||
| United Kingdom | Dominic Inglot | Franko Škugor | 48 | 4 |
The following pairs received wildcards into the doubles main draw:
