Anton Ferdinand Leopold, Count of Hohenzollern-Sigmaringen (also known as Count of Hohenzollern-Haigerloch; 4 December 1692 in Sigmaringen – 23 July 1750 at Brühl Palace) was a German nobleman.

He was the son of Count Franz Anton and his wife Anna Maria Eusebia of Königsegg-Aulendorf.

In 1733, he succeeded Ferdinand of Plettenberg as prime minister of the Electorate of Cologne.

In 1745, he voted on behalf of Cologne in the election of Emperor Francis I.

He was succeeded as Count of Hohenzollern-Haigerloch by his younger brother Franz Christoph Anton.