Ibaka was given a "flagrant 2" foul for the incident late in the fourth quarter of the Thunder's 108-104 Sunday victory over the Clippers.
On the play, Ibaka swung his arm and connected with Griffin's groin area.
The foul designation is reserved for "unnecessary and excessive contact committed by a player against an opponent" and an "unsportsmanlike act."
Those deemed guilty are subject to a fine of up to $50,000 and/or a suspension by NBA Commissioner David Stern, who declined that punishment in Ibaka's case.
The Thunder are seeded second in the NBA's Western Conference with a 43-16 record.