Koichiro Doi was born and raised in Tokyo. Prior to commencing his career in photography, Doi moved to New York to study fashion design at Parsons School of Design. Doi then returned to Japan and began working as a Still Life photographer. He is currently based in New York.
His advertising clients include Armani, Biotherm, Canon, Carolina Herrera Parfums, Cartier, Covergirl, Clarins, Dior Beauty, Häagen-Dazs, Hennessy, Issey Miyake, Kerastase, Kenzo, Lancôme, L’Oréal, Nexxus Beauty USA, Nissan, Omega, Pantene, Revlon Cosmetics, Rolex, Sephora, Shu Uemura, Shiseido, SKII, and Tom Ford.
His editorial clients include French Magazine, Numéro, Velvet, Vogue Japan, i-D, and V Magazine.