The president did not name the third minister Sunday but said he will have at least one more woman on his Cabinet.
Dastgerdi, 50, is currently a gynecologist, and Ajorlu, 43, is a lawmaker.
Iran's last female minister, Farrokhroo Parsay, served from 1968 to 1977. She was executed on charges of corruption after the 1979 Islamic Revolution that brought hard-line Islamists to power.