Marymount Secondary School (Abbreviation: MSS; Chinese: 瑪利曼中學; Demonym: Marymountian) is an all-girls Roman Catholic secondary school located on Blue Pool Road in Happy Valley, Hong Kong Island, Hong Kong.

O Marymount, blest is thy pow'r, And wonderful Thine aim, High virtue, wisdom, precious flow'r, Thy seal to all proclaim, To Mary our most cherished boast, Our school sweet model fair, We pledge our word to honour Thee, O Alma Mater True, We pledge our word to honour Thee, Our hearts do thou renew.

When the school reopened, Hong Kong was facing a new challenge as many thousands of immigrants were pouring across the border to escape the civil war in China.

In October 1957, the school moved to its present location on the wooded slopes near the top of Blue Pool Road, overlooking Happy Valley.

Throughout its history the school campus had also been home to a convent, with the nun's dormitories housed on the fourth floor and the site of the library originally being a chapel.

In 1996, the Columban Sisters initiated the transfer of the sponsorship of the school to the Christian Life Community(CLC) in Hong Kong, the process of which was completed by July 1997.

Over the years, many generations of girls have received an education at Marymount, and the primary and secondary School together now accommodate nearly 2000 students.

In senior forms, students prepare for the HKDSE and select subjects from option blocks.

Every year, students compete in inter-House events, such as the annual Sports Day and Swimming Gala.

The event takes the form of a multi-stage talent show divided into different categories: Subsequent to heats and semi-final rounds held throughout the first term of the school year, finalists perform for the title of Champion in each category, as well as Overall Champion.

The adjudicating panel is normally made up of three industry professionals in the fields of music, dance, and fashion design respectively.

The Talent Quest is highly valued by the student body as the performing arts, particularly music, are integral to Marymount culture.

Catholic students can participate in Religious Activity Convenor (colloquially known RAC) as an elected representative known as Class RAC in each class, or in the Executive Board's Chairlady, two Vice Chairladies, Secretary, Treasurer and Public Relations Officer.

The RAC also monitors different religious groups in the school to spread God's faith and the catholic society.

Religious Groups Being a Catholic institution, the school marks most significant occasions with a Mass.