Ultimately named after Glandore, a village in Co. Cork, but it seems likely that the name "Glandore" was first applied in Belfast to a house on Cavehill Road (BPU, 1894), before being extended to street-names in this neighbourhood. Glandore Avenue, along with Glandore Drive / Gardens / Parade, is part of a group of streets off Antrim Road with names beginning in Glan-. See also Glantrasna Drive, Glanleam Drive, Glantane Drive and Glanworth Drive / Gardens. All of these are place-names in the province of Munster, but beyond this they have little in common. Glan- is usually an anglicisation of the Irish word gleann, 'valley'. However, the Irish name of Glandore is Cuan Dor, in which cuan means 'harbour'. The minutes of the Town Improvement Committee of Belfast Corporation on 24 October 1894 indicate the naming of three new streets off Antrim Road and Skegoniel Avenue: Glandore Avenue, Glandean Street and Glanstrasna Street.