John Jacob
# John Jacob

John Jacob may refer to:

* John Jacob, Marquis of Montferrat (1395–1445)
* Sir John Jacob, 1st Baronet (c. 1597–1666), royalist MP in England
* Sir John Jacob, 2nd Baronet of Bromley (c. 1633–1674), his son, of the Jacob baronets
* Sir John Jacob, 3rd Baronet of Bromley (c. 1665–1740), his son, of the Jacob baronets
* John J. Jacob (Kentucky businessman) (1770–1852), Kentucky businessman, financier, and philanthropist
* John Jacob (East India Company officer) (1812–1858), British officer and founder of Jacobabad in Pakistan
* John J. Jacob (West Virginia politician) (1829–1893), Governor of West Virginia in the United States
* John Jacob (Indiana politician), member of the Indiana House of Representatives
* John Edward Jacob (born 1934), president of the National Urban League in the United States
* John C. Jacob (1936–2008), environmental pioneer in Kerala, India
* John P. Jacob (born 1957), American writer and curator
* E. John Jacob, member of the Kerala Legislative Assembly
* S. John Jacob, member of the Tamil Nadu Legislative Assembly
