Hendrik (Henk) Cornelis Dirk de Wit (24 October 1909 – 16 March 1999) was a Dutch systematic botanist who contributed significantly to the knowledge of the Aroid genera Cryptocoryne and Lagenandra.

[1][2] He grew up in the Waterland, a marshy area in the Northwest Netherlands, and had a lifelong interest in aquatic plants.

[3] During World War II de Wit worked in the 's Lands Plantentuin te Buitenzorg.

[6] De Wit was especially interested in the Aroid genus Cryptocoryne, as well as the closely related Lagenandra on which he published extensively.

The first results of research workers in African botanical taxonomy, prepared under supervision of de Wit, were published in a series named Primitiae Africanae.