Bryant, 23, was limping at the end of Sunday's game against the New York Giants. The Cowboys list him as having a hip injury.
The former first-round draft pick is on pace to have his best season as a pro. In seven games, Bryant has 488 yards and two touchdowns on 41 catches. Last season, Bryant caught 63 balls for 928 yards and nine touchdowns in 15 games.
The following players also did not practice Thursday: linebacker Dan Connor (neck), center Phil Costa (ankle), safety Matt Johnson (hamstring), defensive end Sean Lissemore (ankle), running back DeMarco Murray (foot) and wide receiver Kevin Ogletree (hamstring).
Defensive lineman Jason Hatcher did not practice on Wednesday, but he was a full participant on Thursday.
The Cowboys (3-4) hit the road to play the perfect Atlanta Falcons (7-0) on Sunday at 8:20 p.m. ET.