Carlos Agostinho do Rosário (born 26 October 1954) is a Mozambican politician who was the Prime Minister of Mozambique from 17 January 2015 until 3 March 2022.

Afterwards he became a diplomat in Asia; prior to his appointment as prime minister, Rosario served as ambassador to Indonesia.

He then went to the United Kingdom to study Sustainable Agriculture and Rural Development Economy at Wye College, obtaining an Msc.

In 2009, he became Ambassador to Indonesia, with concurrent accreditation to Malaysia, Singapore, Thailand and East Timor.

He remained in that post until his appointment as Prime Minister on 17 January 2015 by President Filipe Nyusi.