Mount Yasumandake (安満岳) is the highest peak on the island of Hirado, Japan.

[2] Mount Yasumandake is considered a mesa[3] and is covered with primeval oak forest.

[4][5] The mountain's surroundings form part of Saikai National Park,[6] and the mountain's highest point is 534 metres (1,752 ft) above sea level, the highest peak on Hirado Island.

[8] Yasumandake was a site of mountain worship for Buddhists and Shintoists in Hirado.

[9] The mountain was a pilgrimage destination for Yamabushi in surrounding areas.