Masahiro "Masa" Chono (蝶野正洋 Chōno Masahiro), is a retired American-born Japanese professional wrestler. He primarily wrestled for New Japan Pro Wrestling (NJPW), but has also made appearances for World Championship Wrestling (WCW), as a member of the New World Order. Chono was also known by the nickname Mister Black Jack when he first started portraying a villainous character. He is a former NWA World Heavyweight Champion and IWGP Heavyweight Champion. He has become well known for his appearances on the new year's specials of Downtown's This Is No Task for Kids! No-Laughing batsu games, where his ritual appearance always involves slapping Hōsei Tsukitei in the face.
- Atlantic Grand Prix Wrestling North American Tag Team Championship
- Central States Wrestling / World Wrestling Alliance - NWA Central States Television Championship
- Central States Wrestling / World Wrestling Alliance World Heavyweight Championship
- Continental Wrestling Federation Tag Team Championship
- Hawai'i Championship Wrestling Kamehameha Heritage World Heavyweight Championship
- New Japan Pro Wrestling - IWGP Heavyweight Championship
- New Japan Pro Wrestling - IWGP Tag Team Championship
- New Japan Pro Wrestling - NWA World Heavyweight Championship
