Long Danau

Long Danau is a longhouse settlement in the Marudi division of Sarawak, Malaysia. It lies approximately 615.3 km east-north-east of the state capital Kuching.

The longhouse is about three hours' trek from Ramadu Long Danau has a good reputation with travellers, with good food and a chief who speaks English.

The Bornean Horseshoe Bat (Rhinolophus borneensis) has been observed in Long Danau.

Neighbouring settlements include:
 * Ramudu Hulu 2.6 km southwest
 * Pa Mada 5.2 km northeast
 * Pa Dali 5.9 km east
 * Pa Bangar 6.7 km northeast
 * Batu Paton 6.7 km southeast
 * Pa Main 7.6 km north
 * Pa Umor 18.6 km north
 * Bareo 21.1 km north
 * Pa Lungan 26.2 km north
 * Lepu Wei 26.7 km south