Anton Florian (1656 - 1721) was Prince of Liechtenstein between 1719 and 1721.

During the War of the Spanish Succession he went to Spain, where he was chief intendant and prime minister of the Archduke Karl who became Emperor Charles VI, after the sudden death of his brother in 1711. Anton Florian returned to Vienna, for Charles's coronation where he was imperial chief intendant and chairman of the Secret Council until he died in 1721.

In 1719, Charles IV created the new principality of Liechtenstein from the domains of Schellenberg and Vaduz, which were both held by the Liechtenstein family. This was done so that Anton Florian could be admitted to the Reichstag, which required that all members had land that was subordinant only to the Emperor himself (As opposed to land held in fief by higher nobles). Thus, Anton Florian became the first prince of the principality of Liechtenstein, the only state of the Holy Roman Empire that still exists.