Takayuki Koike (ja|小池 崇之; born 12 October 1984) is a retired Japanese athlete who specialized in the 400 metres hurdles.
He won the silver medal at the 2002 Asian Junior Championships,[1] the gold medal at the 2005 East Asian Games,[2] the silver medal at the 2005 Summer Universiade and finished eighth at the 2010 IAAF Continental Cup.
His personal best time was 49.23 seconds, achieved in July 2005 in Tokyo.