Rex Name Meaning, Origin & Gender

Rex Name at a Glance

Name	Rex
Meaning	Diminutive of Reginald: Mighty counselor-ruler.
Origin	English
Gender	Boy

What Does the Name Rex Mean?

According to the information recorded in our baby name database, Rex means “Diminutive of Reginald: Mighty counselor-ruler”. Name meanings can vary between languages, regions and naming traditions, so families may also wish to confirm a meaning within the cultural or linguistic context that matters to them.

Rex Name Origin

Our database records Rex under English origin. Browse more English baby names to compare other names in the same origin collection.

Is Rex a Boy or Girl Name?

In our database, Rex is listed as a boy name. Usage can differ across countries, languages and families.

Choosing the Name Rex

When considering Rex for a baby, you may want to compare its recorded meaning and origin with family traditions, pronunciation, spelling, initials, middle names and how the full name sounds with the family name.