Meaning and name origin
Rex▼ has 1 variant form: Reyes▼.
For more information, see also the related boy name Rey.
There is 1 feminine form of Rex: Rexanne.
Rex is a very popular first name for males (#333 out of 1220, Top 27%) and also a very popular surname or last name for all people (#6158 out of 88799, Top 7%) (Source: 2000 U.S. Population Census).
Displayed below is the baby name popularity of the name Rex for boys. Rex reached its highest rank of #216 in the U.S. in 1950-1959 (Source: 2014 Birth Name Statistics).
Displayed below is a comparison of the popularity of the boy name Rex and its variant form. Popular variation forms ranked in the Top 1000/100 are Rex (#663), Rey (#884) and Reyes. (Source: 2014 Birth Name Statistics).