Capp \c(a)-pp\ as a boy's name is of French origin, and the meaning of Capp is "chaplain". Occupational name. Not related to cap, as in headwear. Capp has 2 variant forms: Cap and Capps. Baby names that sound like Capp are Cabe, Coop, Cope and Kipp. View a list of the 2 names that reference Capp.