Rex

Meaning of Rex

Rex means "king" in Latin. It represents royalty and leadership.

Rex has Latin roots — browse every Latin baby name in our catalog.

Popularity of Rex

After ranking as high as #607 in 2017, Rex has fallen out of the US top 1,000 as of 2025.

Notable people named Rex

• Rex Harrison
  Actor, "My Fair Lady"
• Rex Tillerson
  Former U.S. Secretary of State
• Rex Ryan
  Former NFL Head Coach
• Rex Brown
  Musician, Pantera bassist
• Rex Grossman
  Former NFL Quarterback

More Latin names

Questions about the name Rex

What does the name Rex mean?

Rex means rex means "king" in latin. it represents royalty and leadership, and it comes from Latin origins.

Is Rex a boy's or a girl's name?

Rex is most commonly used as a boy's name in the United States.

How popular is the name Rex?

Rex did not appear in the top 1,000 baby names in 2025, which makes it a genuinely uncommon pick.

When was Rex most popular?

Rex peaked at #607 in 2017.