Date of Birth: 
Place of Birth: Ōsaka, Ōsaka Prefecture, Japan
About Katsunari Takayama
- Katsunari Takayama (?? ??, Takayama Katsunari, born May 12, 1983) is a Japanese former professional boxer who competed from 2000 to 2016.
- He is a five-time minimumweight world champion, having held the WBC title in 2005, the IBF title twice between 2013 and 2015, and the WBO title twice between 2014 and 2017.
- He also held the WBA interim title from to 2006 to 2007.
- He retired from professional boxing in April 2017, as WBO world champion, to focus on participation in the 2020 Olympics.
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