A tree-lined street which connects Antrim Road to a dog-leg bend halfway along Skegoneill Avenue, a much older street that was originally known as Buttermilk Loney.
Ultimately it is 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), later described as being on Glenburn Park, a side-street off Cavehill Road (BPU, 1924). Glandore Avenue is not in the immediate vicinity, but rather is situated several hundred yards away and was also named in 1894. Rather later, in the 1920s there is evidence for a house on Glandore Avenue being called "Glandore House". It is uncertain why name of the Co. Cork village was brought to Belfast and whether the two houses are connected in some way.
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 meaning of Dor is unknown.
“That on the application of the owner Mr W. H. McLaughlin four new streets on his property situate off Antrim Road and Skegoneill Avenue be named: ‘Glanworth Street’, ‘Glandore Street’, ‘Glanmore Street’ and ‘Glandore Gardens’.” (21st February 1894).
“That Mr. W. H. McLaughlin of York Road be informed in reply to his application of 9th inst., that the Committee approve of the names ‘Glandore Avenue’, ‘Glanleam Street’, and ‘Glantrasna Street’ for his 3 new streets off Antrim Road and Skegoniel Avenue, but request him to submit another name in lieu of Glandoran Street". (10th October 1894).
“That on the application of the owner Mr. W. H. McLaughlin a new street on his property situate off Glandore Avenue be named ‘Glanna Street’.” (17th October 1894).
The Irish form of the name was approved in July 2025.