James Stillman Rockefeller (born June 8, 1902) won an Olympic gold medal in rowing but has not bothered to mention the fact in biographical reference works. A paternal grandson of William Rockefeller, his maternal grandfather James Stillman and uncle James Alexander Stillman served as president of the National City Bank of New York.

James Stillman Rockefeller joined that institution in 1930 after working at Brown Brothers, and served as president from 1952 to 1959 and chairman from 1959 to 1967. It was during his tenure that they merged with the smaller First National Bank and took the name First National City Bank of New York. (Under each of his successors,the name has changed again:George Moore shortened it to "First National City Bank" and formed a holding company,First National City Corp.;under Walter Wriston these became Citibank and Citicorp;under John Shepard Reed the firm merged with Travelers Group to become Citigroup).

James Stillman Rockefeller also concerned himself with other family investments, and is today a centenarian and America's oldest living Olympic champion.