Iraqi forces stand guard as a digger demolishes an illegal water canal in Iraq s southern Dhi Qar province on April 24, 2022. AFP
"Two rockets fell outside the Iraqi base of Ain al-Asad," a security forces statement said, adding there were no "losses".
The base, controlled by Iraq, is located in the desert in the western Anbar province and hosts foreign troops from the coalition fighting the Islamic State group.
A coalition official told AFP there was "no impact on the installation reported" and "no coalition personnel injuries reported".
A previously unknown group calling itself "International Resistance" claimed the attack on a pro-Iran channel of messaging app Telegram.
Rockets and drones frequently target the Ain al-Asad base.
On April 8, the coalition said it shot down an armed drone targeting the facility, reporting no casualties or damage.
Dozens of rocket and armed drone attacks have targeted US troops and interests in Iraq in recent months.
Western officials have blamed hardline pro-Iran factions for the attacks, most of which go unclaimed.
The coalition ended its combat mission in Iraq in December, four years after the Baghdad government declared victory over the jihadists.
But roughly 2,500 American soldiers and 1,000 coalition soldiers remain deployed in three Iraqi-controlled bases across the country, including Ain al-Asad, to offer training, advice and assistance to national forces.