The meeting between Kerry and Mohammad Javad Zarif comes ahead of a final round of talks between Iran and world powers in Vienna from around November 17, APA cited unnamed diplomatic sources as saying.
Iran and the five permanent members of the UN Security Council plus Germany (the P5+1) aim to reach a deal by November 24 on reining in Iran's nuclear programme.
Such an accord would ease fears, after a decade of rising tensions, that Tehran might develop nuclear weapons under the guise of its civilian atomic programme.
Months of intense negotiations, including between Kerry and Zarif in mid-October in Vienna, have made some progress but appear deadlocked on the key issues of uranium enrichment and the pace of any sanctions relief.
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Enrichment renders uranium suitable for nuclear power generation and other peaceful uses but also, at high purities, for a nuclear bomb.
Kerry had said yesterday that reaching a deal would require Iran to make "tough decisions".
Catherine Ashton, the outgoing EU foreign policy chief who will continue to chair the nuclear talks until November 24, will also be present in Oman, APA reported.
Oman was where the United States and Iran reportedly held secret talks that laid the groundwork for an interim deal struck last November.
Important towards easing fears about Iran's nuclear programme is an ongoing probe by the UN atomic watchdog into suspected activities by Iran towards developing a nuclear weapon.
The head of the International Atomic Energy Agency watchdog, Yukiya Amano, said today that progress in this probe has slowed in recent months and is now "limited".