Soccer superstar Neymar nearly got into a fight with fans after his game Thursday night ... and it's all 'cause one of them drilled him in the head with a bag of popcorn.
The wild moment happened following Brazil's 1-1 draw with Venezuela at Arena Pantanal in a 2026 World Cup qualifier.
As Neymar was leaving the pitch a bit disappointed -- Brazil and its fans had anticipated a win -- a white bag full of the salty snack came flying from the stands ... and knocked him right in the noggin.
While it, of course, didn't do any physical damage to the 31-year-old athlete .