Cadwalader

Cadwalader by itself most often refers to

• Cadwalader, Wickersham & Taft, the oldest continuously running law firm in the United States, and named in part after John Lambert Cadwalader (1836–1914), an American lawyer and politician.
• Cadwalader's Ice Cream, a chain of ice cream parlours across Wales

As a given name, it may also refer to

• Cadwaladr, King of Gwynedd from c. 655 to 682
• Cædwalla of Wessex, King of Wessex from 685 until 688
• Cadwaladr ap Gruffydd (12th century), brother of Owain Gwynedd