Dmitriy Nikolayevich Gruzdev (Russian: Дми́трий Никола́евич Гру́здев, born 13 March 1986) is a Kazakhstani professional road bicycle racer, who rides for UCI WorldTeam Astana Qazaqstan Team. With ten professional wins, Gruzdev is a four-time winner of the Kazakhstan National Time Trial Championships, and he also won the Kazakhstan National Road Race Championships in 2024. He has also won six gold medals, across three different road events, at the Asian Cycling Championships.