Family History and Genealogy Resources by Surname
Van Dyck Surname Origin
(Origin Dutch) From the dyke; a bank or mound thrown up to prevent inundations from the river or sea.
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.
Van Dyck Surname Meaning and Family Facts
There is more to Van Dyck family history than the origin of your surname:
A Van Dyck Family History Thought:
'If you would not be forgotten,
As soon as you are dead and rotten,
Either write things worthy of reading,
Or do things worthy of writing.' --Benjamin Franklin, May 1738