The Kapñkulu Cavalry () or Sipahis of the Porte, was a corps of elite cavalry soldiers in the army of the Ottoman Empire. There were not really six, but four, divisions in the corps. Two of the six were sub-divisions. The elite cavalry was the mounted counterpart to the Janissaries and played an important part in the Ottoman army.
The Kapñkulu Cavalry formed the cavalry branch of the Kapñkulu army, which also included the Janissaries, the infantry branch.
The Porte's cavalry regiments were called "men" or "people of the six regiments" (). Although the term sipahi ("horsemen") was used for these units, it was generally used for the feudal cavalry, the Timarli sipahi.