Provided are an automatic network configuration apparatus and method between short-range wireless terminals. The apparatus includes a storing unit for storing a threshold range value for determining adjacency with an adjacent wireless terminal, a wireless environment compensation constant in a present wireless environment, and a network configuration parameter for automatic network configuration; a signal strength measuring unit for periodically measuring strength of the wireless signal transmitted from the adjacent wireless terminal; a range calculating unit for calculating a range from another wireless terminal corresponding to the strength of the wireless signal measured in the signal strength measuring unit based on the wireless environment compensation constant in the pre-stored present wireless environment; and a network configuring unit for performing network configuration with the adjacent wireless terminal when the calculated range is within a threshold for determining adjacency.