Hiroyuki Baba (馬場裕之 Baba Hiroyuki) is a Japanese comedian and actor. He is a member of the comedy trio Robert (ロバート) along with Hiroshi Yamamoto and Ryuji Akiyama. In 2005 the three of them appeared together as students in Cromartie High: The Movie.
- Baba is a distant relative of actor and narrator Taketoshi Naito.
- He was a classmate of fellow Robert member Ryuji Akiyama from kindergarten through high school.
- Robert was first formed in 1998.
- He is known for having green hair and two pierced ears. Occasionally he switches hair color.
- Name: Hiroyuki Baba (馬場裕之 Baba Hiroyuki)
- Nickname: Baba-chan (馬場ちゃん)
- Birth date: March 22, 1979
- Birthplace: Kitakyushu, Fukuoka Prefecture, Japan
- Blood type: A
- Height: 5' 11¾" (182cm)
-  Cromartie High: The Movie
- [2003-2004] Wai! Wai! Wai! ... Thursday MC