Arend Ludolf van Hasselt

Arend Ludolf van Hasselt, (Groningen 6 January 1848 – Oosterbeek, 29 September 1909), was a Dutch colonial administrator, ethnographer, and plant collector in the Dutch East Indies.

He served in several high-ranking posts, participated in one of the most important 19th-century scientific expeditions to Sumatra, and contributed significantly to ethnographic, linguistic, and botanical knowledge of central Sumatra. In his later years he became a professor of Indonesian land and ethnology in Delft and played a key role in the Royal Dutch Geographical Society (KNAG).