
The Nobility of Indonesia is comprised by the more than 350 royal families that ruled the Indonesian Princely Estates, plus the customarily recognised nobility of each particular Kingdom. Their members form an ancient nobility of blood whose noble titles are many times socially, traditionally and routinely recognized. However, although socially tolerated and the chiefs of these Royal houses sometimes still have representational and ceremonial roles, they no longer have legal privileges,
In 2007, the Indonesian Parliament passed a law formally recognizing some residual rights to around 300 Indonesian Royal Families. This law permits the descendants of the royal families and Indonesian Princely States to seek government help, particularly for the preservation or restoration of palaces and the financing of traditional and symbolic festivals.

In the 17th century, the Mataram Sultanate, an Islamic polity in south central Java that reached its peak in the 17th century, developed a keraton (“court”) culture from which the Sultan emerged as the figure ruling over a relatively independent aristocracy. Named para yayi (“the king’s brothers”), nobles, officials, administrators, and chiefs were integrated in a patron-client relationship with the Sultan to preside over the peripheries of the kingdom. This noble status is also applicable to their descendants. The homeland of priyayi culture is attributed to Mataram’s center, namely the Javanese-speaking middle and eastern parts of Java.
The Priyayi are the only group of people who are identifiable by their surname. Having a surname is not a prevalent institution for the vast majority of Indonesians. Therefore, the possession of a surname in Java is often associated to nobility – especially in Java.

Generally, the royal titles are:
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