The Hong Kong Golf Club had to increase the Hong Kong Open
The Hong Kong Open was postponed due to the "continuing level of social unrest" in the city, say the European Tour and Asian Tour.
There have been anti-government protests in Hong Kong since June, with clashes between police and activists becoming increasingly violent.
The tournament was to take place from November 28 to December 1.
"An attempt will be made to postpone the tournament to the beginning of 2020," said a joint statement from the organizers.
"As the safety of our players, staff, stakeholders and everyone involved in each and every one of our tournaments around the world is our top priority, we think this is the right but unfortunate course of action," said European Tour chief executive Keith Pelley.