Istana Pantai, Royal residence in Tutong District, Brunei.

Istana Pantai is a royal building in Tutong District, Brunei, located along Jalan Kuala Tutong near Seri Kenangan Beach. The structure sits between two water views: the South China Sea and the Tutong River.

The wooden palace was built in the 1950s as a seaside retreat for Sultan Omar Ali Saifuddien III. It served as one of his temporary official residences during that era.

The name Istana Pantai means "Beach Palace" in Malay, reflecting its role as a seaside retreat for Sultan Omar Ali Saifuddien III. The building is now listed as a tourist attraction and historical site in Tutong District, and its preserved wooden appearance is what visitors come to see.

Istana Pantai stands on Jalan Kuala Tutong in Tutong District, with Seri Kenangan Beach on one side and the Tutong River on the other. The building is a preserved wooden structure rather than a staffed museum, so there are no guided tours or set opening hours; check locally before travelling out.

Istana Pantai is one of Brunei's few surviving examples of a palace built entirely from wood, and its appearance has been largely kept as it was. The building now serves as a tourist attraction and historical site in Tutong District.