Meaning and name origin
Louiza \lo(ui)-za\ as a girl's name is of Old German origin, and the meaning of Louiza is "famous warrior". Louiza is a variant of Louise (Old German): feminine of Louis; French version of Ludwig. A given name for girls which is only scarcely used.
Louiza is not a popular first name for females and an equally uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the girl name Louiza and its variant forms. Popular variation forms ranked in the Top 1000/100 are Louisa (#973), Luisa and Louise. (Source: 2014 Birth Name Statistics).