Telecommunications Users Association chief executive Paul Brislen is stepping down after three years in the role.
No reason was given for his departure, but Mr Brislen said in a statement it was now a good time to pass the baton to a new chief executive.
Issues Mr Brislen has dealt with include mobile termination rates, the threat of a 10-year regulatory holiday with the ultra fast broadband rollout, international mobile roaming rates and copyright legislation.
The TUANZ website said he has also kept a watching brief on the ultra fast broadband and rural broadband initiative rollout, spectrum auctions, content debates and the ultimate aim - a faster, smarter, more connected New Zealand.
Mr Brislen was head of corporate communications at Vodafone NZ before taking up his current position.
