The 2019 Chengdu Open was a men's tennis tournament played on outdoor hard courts.

It was the 4th edition of the Chengdu Open and part of the ATP Tour 250 series of the 2019 ATP Tour.

It took place at the Sichuan International Tennis Center in Chengdu, China, from September 23 to 29.

The following players received wildcards into the singles main draw: The following player received entry using a protected ranking into the singles main draw: The following player received entry as a special exempt: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: The following pairs received wildcards into the doubles main draw: