Franz Anton, Count of Hohenzollern-Haigerloch (2 December 1657 at Sigmaringen Castle – 14 October 1702 in Friedlingen), was a reigning Count of Hohenzollern-Haigerloch.

Franz Anton was the youngest son of Prince Meinrad I of Hohenzollern-Sigmaringen (1605-1681) from his marriage to Anna Marie (1613-1682), the daughter of Baron Ferdinand of Törring at Seefeld.

He served in the imperial army and reached the rank of Field Marshal-Lieutenant. Under the terms of the family's elevation to the rank of Prince, his eldest brother inherited the principality of Hohenzollern-Sigmaringen and Franz Anton only inherited the County of Hohenzollern-Haigerloch. In 1692, Emperor Leopold I again confirmed that the Princes of Swabina branch of the House of Hohenzollern held the rank of Imperial Princes, he explicitly made an exception for the Haigerloch line.^[1]

Franz Anton fell in the Battle of Friedlingen, during the War of the Spanish Succession.

Franz Anton married on 5 February 1687 to Anna Maria Eusebia (1670-1716), the daughter of Count Anton Eusebius of Königsegg-Aulendorf. The couple had the following children:

• Ferdinand Leopold Anton (1692-1750), clergy and prime minister of Cologne
• Anna Maria (1694-1732), married in 1714 to Ludwig Xaver Fugger, Count of Kirchberg and Weissenhorn (1688-1746), a descendent of the Fugger Family.
• Maria Franziska (1697-1767), married in 1720 to Count Franz Hugo of Koenigsegg-Rothfels (1698-1772)
• Franz Christoph Anton (1699-1767), clergy and prime minister of Cologne

• House of Hohenzollern