TMZ Sports has obtained video that shows Conor McGregor taking his rape accuser by the hand and leading her into a bathroom ... where she says he sexually assaulted her.
The footage was shot inside the Kaseya Center in Miami at around midnight on June 10 ... just after the Nuggets had beaten the Heat in Game 4 of the NBA Finals on June 9.
In the video, you can see McGregor -- wearing a black tee -- leaving a restroom area to speak with a woman in a white shirt.