The Warren Blackwood Alliance of Councils (WBAC) is a Voluntary Regional Organisation of Councils representing the Shires of Boyup Brook, Bridgetown-Greenbushes, Donnybrook-Balingup, Manjimup and Nannup.  The WBAC was formed in 2001 following the restructure of the timber industry to work as a collective  body on issues affecting those areas in the Warren and Blackwood catchments.

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The WBAC exists to help develop a prosperous and sustainable region in the Warren Blackwood and to improve the quality of life for residents in the area. The WBAC acts as an advocacy group by supporting or undertaking significant projects relating to promoting economic development and diversity and encouraging regional population growth.