The following is a list of ecoregions in Chad, according to the Worldwide Fund for Nature (WWF).

Terrestrial ecoregions

By major habitat type:

Tropical and subtropical grasslands, savannas, and shrublands

• East Sudanian savanna
• Sahelian Acacia savanna

Flooded grasslands and savannas

• Lake Chad flooded savanna

Deserts and xeric shrublands

• East Saharan montane xeric woodlands
• Sahara Desert
• South Saharan steppe and woodlands
• Tibesti-Jebel Uweinat montane xeric woodlands

Freshwater ecoregions

By bioregion:

Nilo-Sudan

• Dry Sahel
• Lake Chad catchment