Kodai Ichihara (市原 弘大, Ichihara Kōdai, born 29 May 1982) is a Japanese professional golfer who plays on the Japan Golf Tour.

Ichihara had his first win on the tour in June 2018, the Japan Golf Tour Championship Mori Building Cup Shishido Hills.

He also has one win on the Japan Challenge Tour, the 2003 Kanitop Cup.

[2] He made the cut and finished tied for 79th.

Ichihara's win at the 2018 Japan Golf Tour Championship lifted him to second place in the 2018 Japan Golf Tour money list, earning him a place in the 2018 Open Championship.