Syamsul is a Southeast Asian name that may refer to the following notable people:
Given name As'ad Syamsul Arifin (1897–1990), Indonesian national hero Cecep Syamsul Hari (born 1967), Indonesian poet Syamsul Alam (died after 1727), Indonesian sultan Syamsul Anwar Harahap (born 1952), Indonesian boxer Syamsul Chaeruddin (born 1983), Indonesian football midfielder Syamsul Saad (born 1975), Malaysian football defender Syamsul Yusof (born 1984), Malaysian actor, film director, writer, producer and singer
Surname Nazrin Syamsul (born 1990), Malaysian football player