Patricio Rivas, a wealthy lawyer, was Acting President (then called Supreme Director) of Nicaragua from 30 June 1839 to 27 July 1839 and from 21 September 1840 to 4 March 1841, respectively. Later he served as the 33rd President of one of the several competing governments of Nicaragua from 30 October 1855 to 24 June 1857. However, he was merely a puppet president; rule was actually held by William Walker.
| Preceded by José María Estrada |
President of Nicaragua (For William Walker) 1855-1857 |
Succeeded by Tomás Martínez |