St. Teresa's School Kowloon (STS, Chinese: 九龍聖德肋撒英文學校) was a Roman Catholic co-educational day school, with primary and kindergarten sections, on Prince Edward Road in Kowloon, Hong Kong.

St Teresa's School was founded by Mrs. Maria Lourdes Bau in Hong Kong in 1952.

Its first premises were situated in Boundary Street with only three bright and gaily decorated classrooms.

In 1954 it moved into St. Teresa's Church compound at Prince Edward Road and remain at the same site till present.

The atmosphere in the school was a happy one, and individual attention to the students rules foremost in the daily routine of the staff.

Its position in the church compound enabled St. Teresa's School to participate in all the church activities and to benefit unceasingly from the spiritual care and guidance of its supervisor and Parish Priest, Father Orlando and other Rev.

STS attracted not only local Chinese pupils, but also had a smaller percentage of pupils from families of different nationalities including Portuguese, British, American, Swiss, Italian, Japanese, Korean, Vietnamese, Indian and Indonesian etc.

An open group 'St Teresa's School, Kowloon' was created in Facebook with members reaching the important 600 mark in January, 2008.

The Grand Re-union party for all STS Alumni, their parents and former Principals & teachers took place on school premises in the afternoon on June 28, 2008.