Mary Yap Kain Ching (Chinese: 叶娟呈; pinyin: Yè Juānchéng) is a Malaysian politician and the former Deputy Minister of Higher Education in the Cabinet of Malaysia.

Mary was born on 10 March 1951 in Tawau, Crown Colony of North Borneo and spent most of her childhood there before being sent to Kota Kinabalu to live with relatives after Form 3 to continue her studies.

[3] She was appointed to the Women's Advisory Council for Sabah as a member and the chair of Education Committee in 2009.

On 10 November 2017, she opened the Magnetic Resonance Imaging (MRI) Research Centre of the National University of Malaysia.

[6] Prior to the 2013 general election, she contest the parliamentary seat in her hometown of Tawau and won, subsequently became a Member of Parliament for the town.