The primary postmarks found on items from Kamerun are those of the German post offices in Kamerun, Marine-Schiffspost postmarks of German naval vessels in Kamerun waters, and postmarks of steamers serving on the Hamburg-Westafrika routes.

Additionally, Kamerun items can be found with postmarks from stations in the interior of the territory, railway postmarks, expedition postmarks, censor marks, auxiliary seepost markings, and landing postmarks on items transported via seepost back to Europe.