Selat Panjang is the capital of Kepulauan Meranti Regency, which is part of the province of Riau in Indonesia. The regency is a new regency in Riau province which was established in 2009 and it has been separated from Bengkalis Regency. Tebing Tinggi island is separated by a narrow channel from Sumatra, and is west of Singapore across the Strait of Malacca.