Johnny Depp & Amber Heard Are Possible Victims in Peeping Tom Case

Johnny Depp and Amber Heard might have been victims of a Peeping Tom who shot upskirt videos during the shooting of several of his movies ... so claim 3 women in a new lawsuit.

Kevin Thomas Roy -- a longtime assistant director with credits on Depp's 'Rum Diary' and "Pirates of the Caribbean: On Stranger Tides" -- is being sued by 3 women for invasion of privacy and emotional distress ... this according to legal docs obtained by TMZ.

The women say Roy was closely associated with Depp's production team and there's a "high probability" Amber was secretly shot. The suit doesn't specifically mention which movie ... but Amber worked with Johnny in 'Rum.'

The suit claims Johnny may have also been a victim, but no specifics are provided.

Roy is accused of using his phone and planting hidden cameras in bathrooms and other private areas to videotape his friends, co-workers and actors. The suit alleges Roy kept videos going back 7 years ... showing people in various states of undress.

And get this ... according to the suit, Roy secretly shot video of his wife's sister's honeymoon.