Meaning and name origin
Cato \c(a)-to\ as a boy's name (also used as girl's name Cato), is of Latin origin, and the meaning of Cato is "all-knowing". Cato the Elder, born Marcus Portius, was a high-minded Roman statesman of the time of Julius Caesar.
Cato is not a popular first name for males but a very popular surname or last name for all people (#3192 out of 88799, Top 4%) (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the boy name Cato and its variant forms. The only popular variation form ranked in the Top 1000/100 is Marcus (#158). (Source: 2014 Birth Name Statistics).