Heidi Becker (born October 11, 1940 in Klagenfurt, Austria (at the time part of Germany)) is an Austrian-born model. She is best known for being Playboy magazine's Playmate of the Month for its June 1961 issue. Her centerfold was photographed by Mario Casilli.
When Heidi was 16, she and her family left Austria and settled in Milwaukee, Wisconsin. She later studied nutrition at the University of Wisconsin–Madison. She dropped out and began working as a hairstylist. She also worked as a Bunny at the Los Angeles Playboy Club.
In December 1979 she again posed semi-nude for Playboy for the "Playmates Forever!" pictorial.