What Is a Niece's Son Called
A niece's son is called a grandnephew. This term is used to describe the child of your niece or nephew. It places the relationship one generation below your own siblings or their children.
How the Term Fits in Family Relationships
Your niece is the daughter of your sibling. Her child is therefore your grandnephew. In some cultures, the term grandnephew or grandniece is also used for the children of your nephew or niece.
Quick Reference for Kinship Terms
For a clear overview of family relationship terms, you can check the Kinship glossary at https://www.merriam-webster.com/kinship. Understanding these terms helps with genealogy, legal forms, and everyday conversations about family.
