Cadwaladr, Cadwalader or Cadwallader (with other variant spellings) is a given name and surname of Welsh origin meaning "battle-leader".
It was most notably held by Cadwaladr, a seventh-century king of Gwynedd, who was the last Welsh king to claim lordship over all of Britain.
The name is pronounced [kadˈwaladər] in Welsh and typically /kədˈwɒlədər/ in English.
This section lists people whose surname is a variant spelling of Cadwaladr other than Cadwalader and Cadwallader, which have their own dedicated pages.