Campion \c(a)-mpion, cam-pion\ as a boy's name is of Middle English origin, and the meaning of Campion is "champion". Name of a small wildflower and of an English Catholic martyr, Edmund Campion. A fictional detective, Albert Campion, features in the popular murder mysteries of Margery Allingham.
Campion has 1 variant form: Campian.
For more information, see also the related name Champion.