Provided are a server apparatus, an information providing program, an information providing method, and an information providing system, capable of effectively acquiring information regarding facilities, etc., which are located in an approximate direction from the current position of a user, even in the case that a destination is not determined. When the server apparatus receives, from the portable terminal device, position information, direction information, and an information acquisition request which have been acquired by the portable terminal device, the server apparatus determines an information extraction range on the basis of the position information and the direction information. Then, the server apparatus extracts provision information corresponding to a position located within the determined information extraction range, and provides the provision information to the portable terminal device.