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Rex meaning and name origin
Rex \rex\ as a boy's name is pronounced reks. It is of Latin origin, and the meaning of Rex is "king". Mostly 20th-century use. Actor Rex Harrison; film critic Rex Reed.Rex has 1 variant form: Reyes.
For more information, see also the related name Rey. Baby names that sound like Rex are Regis and Rochus.
View a list of the 2 names that reference Rex.
Popularity of Rex
Rex is a very popular first name for men (#333 out of 1220) and also a very popular surname or last name for all people (#6158 out of 88799) (1990 U.S. Census).
Displayed below is the baby names popularity of the name Rex for boys (2012 statistics). Compare Rex with its variant form and related boy baby names.