Olin Stephen Pace (March 9, 1891 – April 5, 1970) was an American politician and lawyer.

After admittance to the state bar in 1914, Pace became a practicing lawyer in Americus, Georgia.

In 1936, he won election as a Democrat representing Georgia's 3rd congressional district in the United States House of Representatives during the 75th United States Congress.

Pace did not run for reelection in 1950 and returned to practicing law in Americus.

He died in that city on April 5, 1970, and was buried in its Sunset Memorial Gardens.