Zilwicki may refer to:
- Anton Zilwicki, a Manticoran Naval and Intelligence officer.
- Helen Zilwicki Senior, an RMN officer, wife of Anton and mother of Helen Jr.
- Helen Zilwicki, the daughter of Anton and Helen Sr. and another RMN officer.
- Queen Berry I Zilwicki, adoptive daughter of Anton Zilwicki and first Queen of the Kingdom of Torch.
- Larens "Lars" Zilwicki, Queen Berry's younger brother.
- the House of Zilwicki, the Kingdom of Torch's royal family.