John Joseph "Bo" Molenda (February 20, 1905 – July 20, 1986) was an American football player and coach.

He played primarily a fullback, in college at the for the University of Michigan and for nine seasons in the National Football League (NFL) with the New York Yankees, the Green Bay Packers.

Sophomores Molenda and Oosterbaan also paired up on Michigan's basketball team in 1926, leading some to conclude they were "even better cagers than footballers, which, by the way, is saying quite a little.

"[8] Molenda was a tough defensive player in basketball and was also the Wolverines' top scorer in 1926,[9] until poor classroom performance resulted in his being placed on the "home list" in February 1926.

[12][13][14] In February 1927, two weeks after being sent home due to academic deficiencies, Molenda signed a contract to pay professional basketball for the Industrial Mutual Association in Flint, Michigan.

[15] In June 1927, he signed a contract to play professional football for the New York Yankees team organized by sports promoter, C. C. Pyle, and featuring Red Grange.

[17] In December 1927, Molenda signed a contract to play professional baseball for the Waco team in Texas League starting in March 1928.

[3] In November 1928, the Green Bay Packers purchased Molenda's contracts from Charlie Pyle, and one Wisconsin newspaper wrote: "Packer football stock climbed a notch or two here Thursday when Bo Molenda, one of the best fullbacks in the National Football league, joined the Big Bay Blues.

[23] He reported to the Denver baseball team in the spring of 1929, but was able to secure his release when he learned of an industrial opening in Green Bay.

"[30] The Packers won their first NFL championship in 1929 after a key 20-6 win over a New York Giants team led by Molenda's former Michigan teammate, Benny Friedman.

He was credited with "carrying the brunt of the Giants' victorious offense in the famous "gumshoe game" against the Chicago Bears in 1934.

[42] With the U.S. entry into World War II, Molenda enlisted in the Navy in early 1942 as a chief petty officer.

After duty at Redlands University in charge of the Navy's physical education program,[43] Molenda was promoted to a lieutenant and assigned in the September 1943 as the head coach of the football team at the naval training station in San Diego.

[46] In January 1944, Molenda was shipped overseas to active duty in the Pacific where he took part in the Hollandia and Leyte invasions.

[48] At that time, Curly Lambeau hired Molenda to return to Green Bay as the Packers' backfield coach.

[51] In March 1949, Molenda signed with the Chicago Hornets of the All-America Football Conference as the team's backfield coach.

[53] In March 1950, Molenda was hired as the athletic director and head football coach at Menlo College in Atherton, California.

[39] After his death in 1986, the Pro Football Hall of Fame's veterans committee was reportedly considering Molenda as a possible inductee.