Annex or annexe may refer to:
Places The Annex, a neighbourhood in downtown Toronto, Ontario, Canada The Annex, New Haven, a neighborhood of New Haven, Connecticut, United States Annex, Oregon, a census-designated place in the United States RELLIS Campus, a satellite campus of Texas A&M University in Bryan, Texas, US; formerly named the Research Annex, and commonly known as the Riverside Annex or simply the Annex
Other uses Annexation Annex (comics), a Marvel Comics character Addendum or appendix at the end of a document The Annex, Grand Cayman, a football ground in George Town, Cayman Islands "Annex", B-side of the 1980 Orchestral Manoeuvres in the Dark single "Enola Gay" Annex, an early name for the Bangkok Adventist Hospital Wing (building), a part of a building subordinate to the main structure