Naohiro Sugiyama is a midfielder from Kitakyushu, Fukuoka. He played for Ohzu High School and Juntendo University before joining Roasso Kumamoto in 2021. Sugiyama helped Kumamoto win promotion from J3 in his first season and then contributed goals in J2 as the club reached the promotion play-off final. Gamba Osaka signed him for 2023, and after loan spells with Montedio Yamagata and JEF United Chiba, he joined JEF permanently in 2025.