William L. "Trey" Knox III (born August 14, 2001) is an American professional football tight end who is a free agent.

Knox attended Blackman High School in Murfreesboro, Tennessee, where he started three years at wide receiver and also played linebacker.

[2] Ranked a four-star recruit and a top-300 prospect nationally, he committed to play college football for the Arkansas Razorbacks.

[3][4] Knox saw immediate playing time as a true freshman at Arkansas in 2019, totaling 28 catches for 385 yards along with three touchdowns while being named honorable mention All-Freshman by Pro Football Focus.

[7] He moved from wide receiver to tight end in 2021 and posted 20 receptions for 141 yards and a touchdown.