Juan Bautista Alvarado
8th Governor of the Californias
In office 1837–1842
Preceded by	José Castro
Succeeded by	Manuel Micheltorena
President of Alta California (Unrecognized)
In office 1836–1837
Personal details
Born	(1809-02-14)February 14, 1809 Monterey, California
Died	July 13, 1882(1882-07-13) (aged 73) San Pablo, California
Spouse(s)	María Martina Castro de Alvarado
Profession	Politician, ranchero, rebel

Juan Bautista Valentín Alvarado y Vallejo (February 14, 1809 – July 13, 1882) was a Californio and twice Governor of Alta California from 1836 to 1837, and 1838 to 1842.