This study aims to determine the population dynamics of the species Hopea pierrei in the evergreen broadleaved forest stand within the strictly protected zone of Phu Quoc National Park, Kien Giang province. Understanding the Hopea pierrei population dynamics and its ecological relationships with neighbor species will provide useful information for conserving and expanding the distribution area of the species Hopea pierrei. We have collected information on diameter at breast height (dbh) and coordinates of 1,671 woody trees with dbh ≥ 2.5 cm in a 1-ha study plot. The population of Hopea pierrei, with 297 individuals, was similar in diameter distribution to the remaining 50 tree species of the stand. The diameter distribution of the Hopea pierrei population has an inverted J - shape; the number of Hopea pierrei trees was highly concentrated at the small and intermediate tree classes. The population Hopea pierrei showed aggregated pattern at small diameter classes and small spatial scales < 10 m and then shifted to a random distribution as the tree size and spatial scale increased. Wind direction, seed dispersal, species interactions and spatial dependence are the mechanisms that control the spatial distribution and association patterns of Hopea pierrei.