John Dennis Mohring Sr. (born November 14, 1956) is a former American football linebacker who played for the Detroit Lions and the Cleveland Browns of the National Football League (NFL). He played college football at C. W. Post.^[1][2]

John Mohring was born on November 14, 1956, in Glen Cove, New York. He went to Locust Valley High School before playing college football at C. W. Post. While in high school, he was an all-star selection as an outfielder in baseball, a center in basketball, and a two-way player in football.^[3] He also spent one year at St. John's University playing baseball, before transferring to C. W. Post. By his sophomore year at C. W. Post he was already considered to be one of the best defensive players, with 12 sacks, three blocked punts, three passes defended, and 64 tackles by mid-November.^[3] His coach Dom Anile described him as, "the best athlete we've ever had" and "a super athlete who can do anything as if it comes naturally."^[3] He played in all four of his years at C. W. Post.^[4] He still holds the Post all-time records for sacks (56), single-season tackles (135), and career tackles (439). He twice was all-American and was inducted into the C. W. Post Hall of Fame in 2006.^[5]

After his playing career he owned a successful landscaping business for 20 years. He also owned a car-wash.^[9]

John and his wife Trisha have three children, John Jr., Logan, and Avery.^[9] His son John Jr. played professionally in the NFL, CFL, and IFL. His cousin Mike also played in the NFL.