In 2025, 77 US boys were named Ronaldo, making it the 1,988th most common boys’ name of the year, down 37 places from #1,951 in 2024. That is 4 fewer than the 81 boys named Ronaldo in 2024. Its best rank for boys was #552, reached in 1998. That year also had the most boys given the name: 359. For comparison, it was #1,164 in 2015 and #2,417 in 1950.
Social Security card records list Ronaldo in 100 years of the 146 from 1880 to 2025, starting in 1914 with 6 babies. In all, 6,043 US babies have been given the name, all of them boys. Its busiest decade was the 2000s, with 2,096 babies named Ronaldo.
Over the 10 years from 2016 to 2025, 925 US boys were named Ronaldo; the busiest of those years was 2016, with 129. In 2025 that was about 1 in 22,183 of the boys in SSA’s list for the year.
Among the states, Ronaldo ranked highest in California in 2025, at #1,289 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Ronald (1,086,091 babies since 1880), Reynaldo (20,575 babies since 1880) and Reinaldo (3,941 babies since 1880). Rarer spellings such as Romualdo are summarised on this page.