The 2024 Hangzhou Open was a men's tennis tournament played on outdoor hard courts.

It took place at the Hangzhou Olympic Sports Expo Center in Hangzhou, China, from 18 September until 24 September 2024.

Unseeded Marin Čilić, who entered the main draw on a wildcard, won the singles title.

[1] The tournament replaced the Zhuhai Championships on the ATP Tour calendar.

[2] The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following player received entry as lucky losers: The following pairs received wildcards into the doubles main draw: The following pairs received entry as alternates: