Hong Kong Taoist Association Tang Hin Memorial Secondary School (, abbreviated as THMSS) is a secondary school located in Choi Yuen Estate, Sheung Shui, Hong Kong. It is one of the most famous schools in Hong Kong and it is a school. It has a good academic result in the DSE exam. The main medium of instruction is English.
The school motto is "Grasp Principles, Cultivate Virtues" ().
The school was established in 1982. It is the second school owned by Hong Kong Taoist Association and it is the first secondary school of the association. At the time it was established, it was a band 5 secondary school with a modest reputation. But after the hard work of previous students, the school progressively made great improvements in examinations and it changed to a band 2 school later in 1997. After that, it has transformed into a band 1 school in 2003. Since then, the school has attained good exam results every year and has been one of the top schools in Hong Kong. Also, it is recognized as the best school in New Territories. In 2007 and 2008, 4 students got 10A in the Public Examination (HKCE)(HKAL). In 2015, 1 student got 5** in 9 subjects in the Public Examination (HKDSE). In 2025, 1 student got 5** results in 8 subjects in the Public Examination (HKDSE).
The school is located next to Sheung Shui station, near Choi Yuen bus terminus.