The Fresh Prince actor hit Rock in the face after the comedian made a joke about his wife Jada.
The comedian joked that Pinkett Smith looked like 'GI Jane' and Will absolutely lost it.
After returning to his seat, Smith shouted: "Keep my wife's name out your f**king mouth."
The actor later addressed the incident in his Oscar-winning speech, saying: "I want to apologise to the Academy. I want to apologise to all my fellow nominees.
"Art imitates life. I look like the crazy father, just like Richard Williams. But love will make you do crazy things."
Prior to the ceremony starting, Smith shared a clip to Instagram of him and Jada getting ready for the event.
"Me 'n @jadapinkettsmith got all dressed up to choose chaos," he captioned it.
However, just hours after he slapped Rock, Smith decided to add a comment to his post.
He commented: "You can't invite people from Philly or Baltimore nowhere!!"
For context, Smith was born in Philadelphia and Jada was born in Baltimore.
The Academy did respond to the incident, though, writing on Twitter: "The Academy does not condone violence of any form.
The Academy does not condone violence of any form.
Tonight we are delighted to celebrate our 94th Academy Awards winners, who deserve this moment of recognition from their peers and movie lovers around the world.
- The Academy (@TheAcademy) March 28, 2022
"Tonight we are delighted to celebrate our 94th Academy Awards winners, who deserve this moment of recognition from their peers and movie lovers around the world."
The LAPD also responded to the incident, as a rep told the NY Post: "LAPD investigative entities are aware of an incident between two individuals during the Academy Awards program.
"The incident involved one individual slapping another. The individual involved has declined to file a police report.
"If the involved party desires a police report at a later date, LAPD will be available to complete an investigative report."
Featured Image Credit: willsmith/Instagram