In 2025, 28 US boys were named Luiz, making it the 3,911th most common boys’ name of the year, up 1,272 places from #5,183 in 2024. That is 9 more than the 19 boys named Luiz in 2024. Its best rank for boys was #1,161, reached in 1992. The most boys given the name in a single year was 112, in 2001. For comparison, it was #2,891 in 2015 and #2,701 in 1950.
Social Security card records list Luiz in 102 years of the 146 from 1880 to 2025, starting in 1915 with 5 babies. In all, 3,349 US babies have been given the name, all of them boys. Its busiest decade was the 1990s, with 858 babies named Luiz.
Over the 10 years from 2016 to 2025, 273 US boys were named Luiz; the busiest of those years was 2017, with 39. In 2025 that was about 1 in 61,003 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Luis (294,500 babies since 1880), Louis (409,317 babies since 1880), Lois (335,594 babies since 1880) and Luz (28,805 babies since 1880).