Bryant was born on Galveston Island at The University of Texas Medical Branch, but eventually moved to Lufkin, Texas, where he attended Lufkin High School. While at Lufkin High School, he played high school football for the Panthers football team. As a junior, he caught 48 passes for 1,025 yards and 16 touchdowns. Bryant led Lufkin to a 14–1 record, including an appearance in the 5A Division II state semifinals, where they lost 46–28 to Todd Dodge's Southlake Carroll. In his senior year, Bryant had 53 receptions for 1,207 yards with 21 touchdowns, and was an All-State selection. Lufkin finished the season with an 11–1 record, after losing 38–25 to Round Rock in the area round of the playoffs. After the season, Bryant participated in the Offense-Defense All-American Bowl. He was named an All-American by Parade and SuperPrep.