Rafiq Tagi, 61, died in hospital days after being stabbed by an unknown assailant.
He said the attack was related to a critical article he had written about human rights in Iran.
Tagi's name, together with the names of other journalists slain last year, will be inscribed on a special wall at the Washington-based Newseum during a ceremony on May 14.
The list includes a combined total of 14 journalists killed in Pakistan and Iraq, the two most dangerous countries for reporters in 2011.
Journalists from Afghanistan and the Russian republic of Daghestan will also be honored at the Newseum ceremony.