Toshiki Kuroiwa (?? ??) (born (1993-08-31)August 31, 1993 in Yokohama) is a Japanese bobsledder.Kuroiwa competed at the 2014 Winter Olympics for Japan.
He teamed with driver Hiroshi Suzuki, Shintaro Sato and Hisashi Miyazaki in the four-man event, finishing 26th.Kuroiwa made his World Cup debut in December 2013.
As of April 2014, his best finish is 19th, in a four-man event in 2012-13 at Lake Placid.