Iranian Brig. Gen. Hossein Dehqan unveiled the two new missiles, both of which he said had been successfully tested, the Tasnim news agency reported.
The new weaponry includes a laser-guided missile called the "Bina" and a long-range ballistic missile that can carry multiple warheads, the news agency said.
"The new generation of the long-range ground-to-ground ballistic missile with fragmentation warhead is employed to annihilate the enemy's armaments and military equipment," Dehqan said.
U.S. defense officials said they're closely watching the introduction of the missiles, CNN reported.
"Iran's missile program continues to pose a dangerous threat to region, and is an issue we monitor closely," Pentagon spokesman Adm. John Kirby said.
The announcement came on the eve of the 35th anniversary of the 1979 Islamic Revolution, CNN said.