Willemijn is a Dutch feminine given name.
[1] The name originated as a feminine form of the masculine Willem, which is the Dutch version of the Germanic name Wilhelm.
Wilhelm can be literally translated as wil meaning "willful" or "strong" and helm meaning "helmet", and is often interpreted as meaning "fierce helmet" or "fierce protector".
[2][3] The name is most common in the Netherlands but is also present in other Dutch-speaking countries, or countries with Dutch populations or heritage.
[4]