José Casimiro Rondeau Pereyra (March 4, 1773 – November 18, 1844) was a general and politician in Argentina and Uruguay in the early 19th century.

At the age of twenty, he joined the armed forces in Buenos Aires, but later transferred to a regiment in Montevideo.

After two defeats against the Spanish royalist troops in Peru at Venta y Media and Sipe-Sipe, he was relieved from his command in 1816.

In 1819 he became Pueyrredón's successor as Supreme Director (serving this time), but had to resign the following year after the Battle of Cepeda.

Rondeau occupied this post from December 22, 1828 until April 17, 1830, when he was forced to abdicate by his opponent Juan Antonio Lavalleja, who held the majority in the still young parliament.