The Tidung, or Tidong are a group of Dayak

Dayak people

The Dayak or Dyak are the native people of Borneo. It is a loose term for over 200 riverine and hill-dwelling ethnic subgroups, located principally in the interior of Borneo, each with its own dialect, customs, laws, territory and culture, although common distinguishing traits are readily...

 people who lived in northeastern part of Borneo

Borneo

Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

 and surrounding small islands. They lived on both sides of the border of Malaysia and Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. They are closely related to other native people in northeastern Borneo, such as Murut people

Murut people

The Murut is the warrior tribe of indigenous ethnic groups inhabiting northern inland regions of Borneo. The Murut comprise several people groups that are scattered in parts of Borneo Island including Brunei, Kalimantan...

.

Tidung speak Tidong language, a Bornean languages

Bornean languages

The Bornean languages are the Austronesian language families indigenous to the island of Borneo, with the exclusion of Ibanic and other Malayic languages....

. The Tidong are mostly farmers practicing slash-and-burn agriculture. Some are ocean fishermen. They grow sweet potato

Sweet potato

The sweet potato is a dicotyledonous plant that belongs to the family Convolvulaceae. Its large, starchy, sweet-tasting, tuberous roots are an important root vegetable. The young leaves and shoots are sometimes eaten as greens. Of the approximately 50 genera and more than 1,000 species of...

es, cassava

Cassava

Cassava , also called yuca or manioc, a woody shrub of the Euphorbiaceae native to South America, is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates...

, lentils, fruits, and vegetables. There farming methods are often accused of being the main cause of forest fires in Kalimantan. Generally, the Tidong are Muslims, but a few remain animist.