Keijzer is a Dutch surname meaning "emperor" (modern Dutch keizer).
The name contains a ij digraph that is often replaced with a "y", especially outside the Netherlands.
Among variant forms of the surname are Keijser, Keijsers, Keijzers, Keizer, Keyser, De Keijzer, De Keyser, and De Keyzer.
[1] People with this name include: