Lawmakers backed the measure almost unanimously, by a vote of 415 to two.
The House "stands with the people of Iran that are engaged in legitimate and peaceful protests against an oppressive, corrupt regime," and condemns the government's "serious human rights abuses against the Iranian people," the resolution stated.
Violent unrest erupted in dozens of Iranian cities between December 28 and January 1, leaving at least 21 people dead.
The resolution also called on President Donald Trump's administration to issue new sanctions punishing Iran's human rights violators.
"US sanctions target the oppressive, destabilizing regime, not the people of Iran," he added.
Last week Washington imposed sanctions against five Iranian firms alleged to have been working on an illegal ballistic missile program, linking the move to the protests.
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