|Religion affiliation||Roman Catholic|
|Address||3 Wai Chi Street, Shek Kip Mei, Kowloon|
Holy Trinity College is a Roman Catholic girls' secondary school in Hong Kong. It is located in Shek Kip Mei.
On 1966, the school was founded as a private school by . Rose Mary, who was principal of the school for 30 years. On 1968, when the school had changed into a private assisted school, and the formal opening ceremony was held on that year also. On 1973, its matriculation courses were initiated.
On HTC's 10th anniversary, the year of 1976, a new wing was opened. Two years later, the school had become a fully subsidized school. On 1984, the school garden was opened.
Stepping into the 90s, the school underwent a series of modernization and improvement. In 1990, the was established. On 1993, air-conditioners were installed in the hall. On 1996, On . Rose Mary's retirement, . Juliana succeeded her to be the school principal. On the edge of the century, the school gradually computerized. The school hall was demolished in 2004, in order to build a new annex.