Hong Kong Mathematical High Achievers Selection Contest (HKMHASC, Traditional Chinese: 香港青少年數學精英選拔賽) is a yearly mathematics competition for students of or below Secondary 3 in Hong Kong.
It is jointly organized by Po Leung Kuk and Hong Kong Association of Science and Mathematics Education since the academic year 1998-1999.
Part B is usually made up of 2 - 4 problems with different difficulties, and may carry different number of marks, varying from 4 to 8.
The honour of Top 10 (首十名最佳成績) is given to the 5th-10th, and Group Merit Award (團體優異獎) is given to the next 10.
Eight students with best performance will be chosen to participate in the Invitational World Youth Mathematics Inter-City Competition (IWYMIC).