The 2018 China Open was a tennis tournament played on outdoor hard courts.

It was the 19th edition of the China Open for the men (22nd for the women).

Both the men's and the women's events were held at the National Tennis Center in Beijing, China, from October 1 to October 7, 2018.

Seedings are based on WTA rankings as of 24 September 2018[update].

The following players received wildcards into the singles main draw: The following players received entry using a protected ranking into the singles main draw: The following players received entry from the qualifying draw: The following players received entry as lucky losers: The following pairs received wildcards into the doubles main draw: The following pairs received entry as alternates: