Naito Ehara (江原 騎士, Ehara Naito, born 30 July 1993) is a Japanese competitive swimmer.

He competed in the men's 4 × 200 metre freestyle relay at the 2016 Summer Olympics, winning the bronze medal.

He also competed in the men's 400 metre freestyle event.

[1] Ehara serves in the Japan Ground Self-Defense Force as a sergeant first class.

This Japanese swimming biography is a stub.