* Northern Range: The Northern Range is a mountain range that runs along the northern coast of Trinidad. It is the longest mountain range in the country and contains the highest point in Trinidad, El Cerro del Aripo, which is 940 meters (3,084 feet) high.
* Central Range: The Central Range is a mountain range that runs through the center of Trinidad. It is the second-highest mountain range in the country and contains the second-highest point in Trinidad, Mount Tamana, which is 906 meters (2,972 feet) high.
Hills:
* Southern Hills: The Southern Hills are a series of hills that run along the southern coast of Trinidad. They are the lowest mountains in the country and are generally less than 300 meters (984 feet) high.
* Tobago Hills: The Tobago Hills are a series of hills that run through the center of Tobago. They are the highest mountains on the island and contain the highest point in Tobago, Mount Saint George, which is 540 meters (1,772 feet) high.
Valleys:
* Caroni Valley: The Caroni Valley is a valley that runs through the center of Trinidad. It is the largest valley in the country and contains the Caroni River, which is the largest river in Trinidad.
* Nariva Valley: The Nariva Valley is a valley that runs along the eastern coast of Trinidad. It is the second-largest valley in the country and contains the Nariva Swamp, which is the largest mangrove swamp in the country.
Coastal Plains:
* East Coast Plain: The East Coast Plain is a coastal plain that runs along the eastern coast of Trinidad. It is the largest coastal plain in the country and is home to the country's capital city, Port of Spain.
* West Coast Plain: The West Coast Plain is a coastal plain that runs along the western coast of Trinidad. It is the second-largest coastal plain in the country and is home to the country's second-largest city, San Fernando.