| Date: | 11–17 March |
| Edition: | 1st |
| Draw: | 48S / 4Q / 16D |
| Surface: | Hard |
| Location: | Phoenix, Arizona, United States |
| Champs: |  Matteo Berrettini |
| Champd: |  Jamie Murray / Neal Skupski |
| After Year: | 2022 |
The 2019 Arizona Tennis Classic 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 Phoenix, Arizona, United States between March 11 and March 17, 2019.[1]
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 Belgium | David Goffin | 21 | 1 |
 France | Jérémy Chardy | 37 | 2 |
 Australia | John Millman | 42 | 3 |
 Kazakhstan | Mikhail Kukushkin | 43 | 4 |
| Australia | Matthew Ebden | 49 | 5 |
| Italy | Matteo Berrettini | 57 | 6 |
 Tunisia | |||
 Japan | Taro Daniel | 71 | 8 |
| Ernests Gulbis | 79 | 9 | |
| Peter Gojowczyk | 85 | 10 | |
| Nicolás Jarry | 86 | 11 | |
 Argentina | Guido Andreozzi | 88 | 12 |
| Lloyd Harris | 92 | 14 | |
 Norway | Casper Ruud | 94 | 15 |
 Belarus | Ilya Ivashka | 96 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as alternates:
Andrea Arnaboldi Salvatore Caruso
Ernesto Escobedo Egor Gerasimov
Peđa Krstin
Nicola Kuhn Yasutaka Uchiyama
Mikael YmerThe following players received entry from the qualifying draw:
Nathan PonwithThe following players received entry as lucky losers:
Dominik Kellovský Fabrice MartinSee main article: 2019 Arizona Tennis Classic – Singles.
Matteo Berrettini def. Mikhail Kukushkin 3–6, 7–6(8–6), 7–6(7–2).See main article: 2019 Arizona Tennis Classic – Doubles.
Jamie Murray / Neal Skupski def. Austin Krajicek / 
Artem Sitak 6–7(2–7), 7–5, [10–6].