Tony Stewart — Cleared By Grand Jury

NASCAR star Tony Stewart will NOT face criminal charges in the death of Kevin Ward Jr. … who was struck and killed by Stewart during a race last month … TMZ Sports has learned.

We've learned … that a grand jury just decided not to charge Stewart.

On the night of his death, Ward Jr. had gotten out of his car and was aggressively marching toward Stewart's car — when he was struck.

There was talk that Stewart was angry with Ward Jr. and may have intentionally veered his car into him — but apparently the grand jury feels it was nothing more than a freak accident.

Investigators had said they had "enhanced video" of the incident — but clearly the footage did not persuade the grand jury that Stewart did anything illegal. TMZ