Abstract: A ladder stabilizing device is provided for removable securement to the upper ends of the spaced-apart stiles of a ladder in order to position the ladder a predetermined distance from the vertical wall surface of a building structure and which allows the ladder to be leaned against an inside and outside corner of the structure includes a pair of ladder stabilizing support members, and each support member includes an elongated main body portion for spacing the ladder from the vertical wall surface, a socket receiving portion into which the upper end of one stile is inserted, and a wall contacting portion opposite the socket receiving portion and which diverges from the longitudinal axis of the main body portion for engaging the particular wall surface.