Reply To: There are 8 different blood types in the world. Which one are you? Activity › Forums › General Discussion › There are 8 different blood types in the world. Which one are you? › Reply To: There are 8 different blood types in the world. Which one are you? August 9, 2014 at 6:23 pm #7621 VictoriaParticipant If I’m not mistaken, I am O+