Kolosai (kwa Kigiriki Κολοσσαί, Kolosai), ulikuwa mji wa mkoa wa Frigia (katika Uturuki wa leo) juu ya mto Lukus, kilometa 22 kusini kwa Laodikea, karibu na barabara kutoka Efeso hadi mto Eufrate. Umaarufu wake unatokana na barua ambayo Mtume Paulo aliwaandikia Wakristo wa huko, waliokuwa wamehubiriwa Injili na mwanafunzi wake Epafra, mwenyeji wa huko, lakini waliaanza kupokea mafundisho tofauti yaliyoonekana na Paulo kuwa ya kizushi kwa kuwa yalipunguza umuhimu wa Yesu Kristo. Barua hiyo imeingizwa katika Agano Jipya la Biblia ya Kikristo kwa jina la Waraka kwa Wakolosai. Catholic encyclopedia: Colossæ Easton's Bible Dictionary, 1897. Bennett, Andrew Lloyd. "Archaeology From Art: Investigating Colossae and the Miracle of the Archangel Michael at Kona." Near East Archaeological Society Bulletin 50 (2005):15-26. Map and pictures of ruins Commemoration of the Miracle of the Archangel Michael at Colossae Eastern Orthodox icon and synaxarion Commemoration of the Miracles of the Holy Archangel Michael Archived 6 Septemba 2009 at the Wayback Machine. Entry for September 6 in the Prologue from Ochrid by St. Nikolai Velimirovich Majiranukta kwenye ramani: 37°47′16.18″N 29°15′41.55″E﻿ / ﻿37.7878278°N 29.2615417°E﻿ / 37.7878278; 29.2615417