He will be succeeded this month by Angus Grieve, a former pan-European account director on the Ford business at Ogilvy & Mather. He recently spent three years in Taiwan as a senior vice-president at Bozell/FCB Worldwide on its DaimlerChrysler account.
Pitcher's advertising career spans more than half a century, during which he was associated with some of the UK's most famous campaigns.
As the administrative chief of the IPA in the UK, he played a major part in the organisation of the IAA's world congress in London two years ago.
The congress was seen as a defining event in the history of the IAA in Britain, helping to change perceptions of it as an "old boys' drinking club to an important networking organisation for international managers.
Adrian Vickers, the IAA's UK president, said: "It is mainly because of Archie's spectacular energy, skill and commitment that the UK chapter has become one of the IAA's best."
Pitcher will still serve as the deputy chairman of the History of Advertising Trust.