In a typical multi-standard wireless communication receiver, the channelizer extracts multiple radio channels of distinct bandwidths from a digitized wideband input signal. The complexity of the digital front end of the receiver is dominated by the complexity of the channelizer which operates at the highest sampling rate in the system. Computationally efficient architecture is essential for cost-effective implementation of the channelizer. Reconfigurability is another key requirement in the channelizer to support different communication standards. In this paper, we propose a low complexity reconfigurable filter bank (FB) channelizer based on coefficient decimation, interpolation and frequency masking techniques. Design example shows that the proposed FB offers complexity reduction of 54.8% over modulated perfect reconstruction FB and 10.5% over discrete Fourier transform FB. Furthermore, the proposed FB has an added advantage of dynamic reconfigurability over these FBs. © 2009 IEEE.