* Out of 160 Iranian visa applications, 20 refused -Fars
* No reason given, but many officials subject to sanctions
* Ahmadinejad to give final U.N. address in New York
DUBAI, Sept 22 (Reuters) - The United States has denied visas to about 20 Iranian government officials hoping to attend next week's U.N. General Assembly, including two ministers, Iran's Fars news agency reported on Saturday.
Iranian President Mahmoud Ahmadinejad, a regular at the assembly since he took office in 2005, will give his final speech there on Wednesday and will address a meeting on the "rule of law" on Monday.
But of the 160-or-so visas requested by the Iranian delegation two months ago, about 20 were turned down, Fars said.
It gave no reason, but many Iranian officials are subject to travel bans under sanctions related to Iran's nuclear programme.
In Washington, the U.S. State Department had no immediate comment on the matter.
Fars did not name the two ministers who were denied visas and said Ahmadinejad would be accompanied by his chief of staff Esfandiar Rahim Mashaie and Foreign Minister Ali Akbar Salehi.
Fars named two of those banned from going to New York as members of Ahmadinejad's staff: Mohammad Shaikhan, in charge of communications and information, and Mohammad Jafar Behdad, in charge of political affairs.
Ahmadinejad, whose second and final term in office ends next year, has used previous U.N. speeches to defend a nuclear programme he insists is peaceful and to make verbal attacks on Israel, the United States and Europe.
He has questioned the historical truth of the Holocaust and cast doubt on whether Islamist hijackers were really responsible for the attacks of Sept. 11, 2001.
Most Western envoys walk out of the U.N. chamber during his speeches, in protest. (Reporting By Yeganeh Torbati; Additional reporting by Jim Wolf in Washington; Editing by Robin Pomeroy)