C. J. Gardner-Johnson is 24 years old as of 2022. Gardner-Johnson is above average stature and stands tall at a height of 5 feet 11 inches (1.80 m).

Chauncey “C. J.” Gardner-Johnson was born on December 20, 1997, in Cocoa, Florida, United States of America. His biological father is Chauncey Gardner Sr., however, Gardner-Johnson had been raised by his stepfather Brian Johnson since he was a toddler.

C. J. Gardner-Johnson made appearances in all 14 games as a true freshman at Florida. Gardner-Johnson made starts in the final 7 games of his season as a true freshman at Florida.

While a sophomore season at Florida. C. J. Gardner-Johnson announced his intention to forgo his final year of eligibility and declare for the 2019 NFL Draft on November 26, 2018.

C. J. Gardner-Johnson was drafted by the New Orleans Saints in the fourth round (105th overall) of the 2019 NFL Draft. His career NFL statistics as of Week 17, 2021 include 157 Total tackles, 3 Sacks, Pass deflections: 27; Interceptions: 5; Forced fumbles: 1 and Fumble recoveries: 1.