Mr Swann, who will take up his new post in September, has worked for the LGA, and prior to that the Association of Metropolitan Authorities, for 21 years.
Outgoing chairman Sir Jeremy Beecham (Lab) said: 'Mr Swann has played a major role in shaping the public face of the LGA, advising members on its increasingly effective lobbying work and influencing policy. Over the years, he has developed a series of initiatives which have had a major impact on relations between central and local government. He will be sorely missed.'
Mr Swann is noted in the organisation for his challenging and innovative approach to policy development, which has been central to the LGA's success in building effective relations with government.