Glen Lyon is a heritage-listed villa at 34 Glenlyon Drive, Ashgrove, City of Brisbane, Queensland, Australia.

[1] The house was built by South Sea Islander labourers and the bricks were made from clay dug from the property itself.

[2] Probably designed by architect James Cowlishaw, the original plans were modified when financial considerations forced Stewart to have a more modest residence erected.

Within a few years the property contained a dairy herd, fowl runs, duck pond, an orchard and vegetable garden and an assortment of outbuildings.

A well was sunk, detached servants' quarters and a dairy were constructed at the rear of the main house, and a coachman's cottage, known as the Lodge, was erected near Waterworks Road.

An elaborate stained glass window above the central staircase bears the motto of the first owners – Semper fidelis (always faithful) – but the lion's head family crest formerly located beneath this has been replaced by depictions of the Virgin Mary and Child.

Glen Lyon is one of the earliest residences in the Enoggera Creek area, and is closely associated with the development of the suburb of Ashgrove.

Glen Lyon is a rare and substantially intact late 1870s country house with associated outbuildings and gardens, and an avenue of trees.