The Mardijker people refer to an ethnic community in the Dutch East Indies (present-day Indonesia) made up of descendants of freed slaves who spoke or is culturally Portuguese.

The term Mardijker is a Dutch corruption of the Malay word Merdeka, which originates from the Sanskrit Maharddhika meaning "rich, prosperous, and powerful".

During the colonial era, the Mardijkers eventually assimilated completely into the Eurasian Indo community and were no longer registered as a separate ethnic group.

A part of Jakarta is called "Kampung Tugu" an area where Mardijker people had been allowed to settle for after their freedom, the neighborhood retains its Portuguese distinctiveness.

Some Mardijker families also took Dutch names such as Willems, Michiels, Bastiaans, Pieters, Jansz, Fransz, and Davidts.