|Date of birth||July 15, 1943|
|Place of birth||Gulfport, Mississippi|
|NFL draft||1964 / Round: 2 / Pick: 26|
|1964–1970||Los Angeles Rams|
William Frederick Truax (born July 15, 1943) is a former professional American football tight end in the National Football League (NFL) from 1964 to 1973 for the Los Angeles Rams and the Dallas Cowboys. He played in high school at Holy Cross in New Orleans and college football at Louisiana State University and was drafted in the second round of the 1964 NFL draft. Following the 1970 NFL season, Truax was traded by the Rams to the Cowboys for wide receiver Lance Rentzel. He was part of the Cowboys' Super Bowl VI championship team in 1971.