Talaud Regency has the Ratumbanua traditional institution which still exists today in the Indonesia-Philippines border area. This traditional institution is led by a Ratumbanua or regional head assisted by his deputy Inanguwanua and several other officials. Ratumbanua used to have a position as a leader in all aspects of the life of the Talaud community before the current government system was formed, then after the Indonesian government regulation regarding the existence of a Village Head, Ratumbanua's position became a traditional institution and partner of the village government in running the government.

Ratumbanua as a strategic institution in strengthening the cultural resilience of border communities, and as the Indonesian identity of the Talaud people who historically have strengthened the ownership of the Miangas island to remain within the Talaud customary territory of Indonesia. then discuss Ratumbanua as part of Indonesian cultural identity in the Indonesia-Philippines border area. This study looks at the role and existence of Ratumbanua in relation to cultural resilience and Indonesian identity, a study in Bulude Village, Talaud Regency. The existence of the Ratumbanua traditional institution in Bulude Village, Kabaruan District, Talaud, has a significant influence on people's daily lives. This can be seen from the ability of the Ratumbanua traditional institution in upholding Talaud customs and culture such as carrying out traditional ceremonies and as a mediator in solving social problems that arise in people's lives. So the reason why Ratumbanua's role is so dominant in the life of the Talaud community is because Ratumbanua has been rooted in the Talaud community for a long time.

Key Word : Ratumbanua, strategic institution, cultural resilience, Indonesian identity, border area