Margo Cathleen Harshman is an American actress. She is best known for her roles as Tawny Dean on Even Stevens, Alex Jensen on The Big Bang Theory, and Delilah Fielding-McGee on NCIS.

John Elvin Harshman was an American Major League Baseball pitcher with the New York Giants, Chicago White Sox, Baltimore Orioles, Boston Red Sox, and Cleveland Indians between 1948 and 1960. He batted and threw left-handed.