The present invention relates to an information providing system, an information providing method, an information processing apparatus, an information processing method, and a communication terminal, for providing requested information in an easy manner. In an information board 1, guides about information which can be provided are displayed on display units 2A to 2D. A PDA 11 includes a non-contact IC card, and a reader/writer is disposed in each of information requesting units 3A to 3D. The information board 1 acquires information to be provided to the PDA 11, depending on which one of readers/writers the PDA 11 is brought close to, and establishes Bluetooth communication with the PDA 11 in accordance with a Bluetooth address, acquired from the non-contact IC card, of the PDA 11. After establishing the Bluetooth communication, the information board 1 provides the acquired information to the PDA 11 by means of the Bluetooth communication. The present invention may be applied to various types of information processing apparatuses for providing information to users.