Daying County () is a county of Sichuan province, China, under the administration of Suining City and in the central part of the Sichuan Basin. In 2020, it had a population of 387,299 residing in an area of .
Daying is the home of the "", a tourist attraction that is based on a salt lake with nine times the salinity of the ocean and which constitutes the largest indoor water park in China.
A stationary replica of the Titanic is under construction in Daying County as well.
Daying County comprises 1 subdistrict and 9 towns:
The G42 ShanghaiâÂÂChengdu Expressway and DazhouâÂÂChengdu Railway (è¾¾æÂÂéÂÂè·¯) traverses eastâÂÂwest through the entire length of the county.
The county is served by the Daying East Station () on the SuiningâÂÂChengdu Railway.