2021 NFL Official Playing Rules
- Rule 1: THE FIELD
- Rule 2: THE BALL
- Rule 3: DEFINITIONS
- Rule 4: GAME TIMING
- Rule 5: PLAYERS, SUBSTITUTES, EQUIPMENT, GENERAL RULES
- Rule 6: FREE KICKS
- Rule 7: BALL IN PLAY, DEAD BALL, SCRIMMAGE
- Rule 8: FORWARD PASS, BACKWARD PASS, FUMBLE
- Rule 9: SCRIMMAGE KICK
- Rule 10: OPPORTUNITY TO CATCH A KICK, FAIR CATCH
- Rule 11: SCORING
- Rule 12: PLAYER CONDUCT
- Rule 13: NON-PLAYER CONDUCT
- Rule 14: PENALTY ENFORCEMENT
- Rule 15: INSTANT REPLAY
- Rule 16: OVERTIME PROCEDURES
- Rule 17: EMERGENCIES, UNFAIR ACTS
- Rule 18: GUIDELINES FOR CAPTAINS
- Rule 19: OFFICIALS