The Mexican-born actress wed French magnate Francois-Henri Pinault in a civil ceremony Saturday at the City Hall in Paris' chic 6th arrondissement, according to an official there.
The wedding was a small affair, said the official, who was speaking on condition of anonymity, in accordance with policy.
The nuptials followed a rocky romance. The two met in Italy in 2006, announced their engagement and had a baby, Valentina Paloma, in September 2007. Last year they broke off their engagement but made up a few months later.
Hayek, 42, was nominated for an Oscar in 2003 for the film "Frida," the biography of the painter Frida Kahlo, which she produced and starred in. She is one of the executive producers of the hit series "Ugly Betty" and is also the chief executive of Ventanazul, a production company she formed with Metro-Goldwyn-Mayer Inc.
Pinault, 46, is chief executive of the French luxury and retail group PPR SA, which owns high-end labels such as Gucci, Yves Saint Laurent, Balenciaga and Puma.