Baptist Lui Ming Choi Secondary School (BLMCSS) is a Baptist secondary school in Sha Tin, Hong Kong, near Lek Yuen Estate. It was established in 1978 by the Baptist Convention of Hong Kong. Situated in the new town of Sha Tin, the school is a co-educational grammar school offering education at the first to sixth form levels education in Hong Kong. English is the major medium of instruction whereas Cantonese are used for subjects like Chinese Language, Chinese History, Chinese Literature, Liberal Studies, Visual Arts, Physical Education. In junior forms, Mandarin Chinese is also taught. The school has mission in providing an all-round education based on Christian values by nurturing their moral, intellectual, physical, social, aesthetic and spiritual skills, knowledge and attitude. It is a band 1 school.

Sha Tin District is one of the 18 districts of Hong Kong. As one of the 9 districts located in the New Territories, it covers the areas of Sha Tin, Tai Wai, Ma On Shan, Fo Tan, Siu Lek Yuen, Kwun Yam Shan and Ma Liu Shui. The district is the most populous district in Hong Kong, with a population of 659,794 as per 2016 by-census, having a larger population than many states or dependencies including Iceland, Malta, Montenegro and Brunei.