Coloniensis is a Latin adjective meaning "of Cologne". It occurs in many names:
Adam Teuto, called Coloniensis Albertus Coloniensis Annales sancti Panthaleonis Coloniensis maximi Archidioecesis Coloniensis Argentodites coloniensis Cappella Coloniensis Chronica regia Coloniensis Codex Manichaicus Coloniensis Wolbero Coloniensis