José Tadeo Monagas Burgos (28 October 1784 – 18 November 1868) was the president of Venezuela 1847–1851 and 1855–1858, and a hero of the Venezuelan War of Independence.

In 1846, to head off the challenge from the Liberal Party, ex-President and kingmaker José Antonio Páez selected Monagas as Conservative candidate.

In 1848 Páez led a rebellion against Monagas but was defeated by General Santiago Mariño in the 'Battle of the Araguatos', imprisoned, and eventually exiled.

The Liberal Party also passed laws that abolished slavery, extended suffrage, and limited interest rates.

Monagas was married to Luisa Oriach Ladrón de Guevara, who served as First Lady of Venezuela from 1847 until 1851.