Seizō Katō (February 14, 1927 – January 17, 2014) was a Japanese voice actor.
He was best known for voicing deep voiced characters who tended to be in older age ranges.
Notable roles by Seizo Kato:
- Alien Mephilas in Ultraman, Ultraman Mebius (40 years later!), and Ultra Galaxy Mega Monster Battle: Never Ending Odyssey
- Captain Gregory in Seijuu Sentai Gingaman vs. Megaranger
- Chou San in Tokusou Sentai Dekaranger
- Count Magnus Lee in Vampire Hunter D
- Dai Satan in Kyōryū Sentai Zyuranger
- Dankichi Hama in Hajime no Ippo
- Dr. Clay in the second Tenchi Muyo! OVA
- Emperor Zeba in Hikari Sentai Maskman
- General Jark in Kamen Rider BLACK RX
- The Great and Powerful Oz in The Wonderful Wizard of Oz
- Helmedor in Denji Sentai Megaranger vs. Carranger
- Ittetsu Hoshi in Star Of The Giants (his Star-Making Role)
- Jyashinsai in the Tengai Makyou series
- Leader Z in Science Ninja Team Gatchaman Fighter
- Marley in the Japanese dub of Home Alone
- Megatron/Galvatron and Devastator in the Japanese dubs of The Transformers and Transformers: The Movie, as well as Transformers: ★Headmasters and DreamMix TV World Fighters
- Played Megatron's Expy, Mesutron/Minge-atron in Panty & Stocking with Garterbelt
- Professor Hamaguchi in Voltes V
- QQ Kyuutan in Gekisou Sentai Carranger
- Shere Khan in The Jungle Book (1967)
- Skunk Kusai in the 80's Astro Boy anime
- Also voiced some background roles here and there in the original 60's version and voiced Rommel in the 2003 series
- Star King Bazoo in Dengeki Sentai Changeman
- Superintendent Kiyonaga Matsumoto in Case Closed
- Toto/Cassius in the 60's Kimba the White Lion anime
- Vulgyre in Chikyuu Sentai Fiveman
