On August 10, the U.S. leader blamed "Islamic fascists" for a plot foiled in London to perpetrate a series of terrorist acts on board U.S.-bound airliners. American Muslim groups have also criticized Bush for his comments.
And Tursunbai Bakir-uulu said he would stay away from a forum organized by the United States Ombudsman Association.
"He [Bush] enriched his lexicon with a new expression: 'Islamic fascism'," Bakir-uulu told a news conference. "This insult means I, as a national of a country where different religious movements including Islam peacefully co-exist, cannot attend the September conference of U.S. human rights advocates."
The ombudsman in the Central Asian state, where about 75% of the population practice Islam, said Bush had offended Muslims from all over the world.
The conference will be held in Des Moines, Iowa on September 12-15.