Dalam Bay (Indonesian: Teluk Dalam) is an administrative district (kecamatan) of the Simeulue Regency on Simeulue island in the Indonesian province of Aceh.

At the 2010 Census it had a total population of 5,091 people,[2] which by mid 2023 had increased to 5,709.

[1] Teluk Dalam is divided administratively into 10 kampong:

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