Robert Bray Mitinger (Pronounced: MIGHT-in-ger) (February 13, 1940, in Greensburg, Pennsylvania – September 25, 2004, in State College, Pennsylvania) was an American professional football player for the San Diego Chargers of the American Football League (NFL).

He played 42 games at linebacker for the Chargers for seven seasons (1962–1964, 1966, 1968), including their 51–10 rout of the Boston Patriots at Balboa Stadium in the 1963 AFL championship, the high point of the team's 44-year history.

In 1999, a Chula Vista, California, man discovered the ring in his deceased mother's jewelry box and placed an ad on eBay, seeking to contact Mitinger.

He died September 27, 2004, at the Mount Nittany Medical Center in State College, Pennsylvania, from complications from stomach cancer.

The Robert B. Mitinger Award, named in his honor, is presented to Penn State Nittany Lions football players who personify courage, character and social responsibility.