Abstract: A picture hanging device for hanging pictures in corners featuring an adjustable first panel comprising a first inner telescopic panel and a first outer telescopic panel; an adjustable second panel comprising a second inner telescopic panel and a second outer telescopic panel, the first end of the second panel is pivotally connected to the second end of the first panel via a first hinge; an adjustable third panel comprising a third inner telescopic panel and a third outer telescopic panel, the first end of the third panel is pivotally attached to the first end of the first panel via a second hinge and the second end of the third panel is pivotally attached to the second end of the second panel via a third hinge; and a sliding hanger disposed on the third panel, the sliding hanger functions to hold a picture being mounted by the picture hanging device.