Lilian Masediba Matabane Ngoyi, "Mma Ngoyi", OMSG was a South African anti-apartheid activist. She was the first woman elected to the executive committee of the African National Congress, and helped launch the Federation of South African Women.

The Order for Meritorious Service is a South African National Order that consisted of two classes, in gold and silver, and was awarded to deserving South African citizens. The order was discontinued on 2 December 2002.