Naoki Kobayashi (小林 直己, Kobayashi Naoki; born 20 December 1990 in Hadano, Kanagawa) is a Japanese track and field sprinter who specialises in the 400 metres. His personal best in the event is 45.79 seconds. He competed in the 4 × 400 metres relay at the 2015 World Championships without qualifying for the final.
Source: “Naoki Kobayashi (sprinter)”, English Wikipedia (CC BY-SA 4.0), excerpt
