Carey was to perform Saturday at an outdoor space near Hong Kong's Central financial district. Promoter Concerts Asia said it had only sold 4,000 tickets, despite a "substantial" advertising campaign.
"We have decided to cancel the event effective immediately due to both the poor response of public ticket sales and also due to specific last-minute demands which we find wholly unreasonable and not with the best interests of Hong Kong, us and also the fans," said a statement posted Thursday on the promoter's Web site.
Concerts Asia declined further comment, and contact information for Carey wasn't immediately available.
Hits by the 36-year-old Grammy-winning singer include "We Belong Together."