Keiko Ihara (井原 慶子, Ihara Keiko) (born July 4, 1973) is a Japanese female driver in the new International Formula Master S2000 championship. She was a former race queen, one of the women who dress up in swimsuits and parade around race circuits, before deciding to become a racing driver. She is one of the few Japanese women nationals to race internationally at a high level. Her best finishes in the British Formula 3 International Championship are two 8th places finishes in 2005, which helped her to a final championship standing position of 16th with 12 points. In the 2006 series, she finished in 17th and last position in the Championship Class, with 4 points.
