Obama and Macri played at the Golf Club Buenos Aires, an exclusive club on the outskirts of the Argentine capital, a government statement said. The club is managed by the president's brother Gianfranco Macri.
Macri, a wealthy businessman, has boasted in the past of playing, and beating, Donald Trump before the New York real-estate mogul became US president.
Macri had earlier met Obama when he welcomed the now ex-US leader to Argentina last year.
Obama made an impassioned plea on Friday for the world to embrace clean energy and overcome climate change at a Green Economy conference in Cordoba, in central Argentina.
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