Pulau Tanjung Dendang (GPS: 6.4145, 99.91292) is an elongated island on the northeast coast of Pulau Langkawi. Pulau Tanjung Dendang is to the east of Pulau Langgun. There is a cape on the northernmost tip called Tanjung Dendang, beyond which is the straits of Selat Tanjung Dendang. Selat Tikus separates the island from Pulau Langgun and Pulau Anak Tikus. On the southernmost part of the island is Tanjung Tembus.
There are two caves on Pulau Tanjung Dendang namely Gua China and Gua Assam. On the east coast of the island is a bay called Teluk China Mati, or "Dead Chinaman Bay".