| Alejandro | Thiago | |
|---|---|---|
| Meaning | defender of the people | Saint James / James |
| Origin | spanish | spanish |
| Gender | Boy | Boy |
| Pronunciation | ah-leh-HAHN-dro | tee-AH-go |
| Syllables | 4 | 2 |
| First appeared | 1885 | 1986 |
| Peak year | 2001 (4,557) | 2025 (5,835) |
| In 2025 | 1,842 | 5,835 |
| Trend | Declining | Near its peak |
Source: US Social Security Administration.
| Decade | Alejandro | Thiago |
|---|---|---|
| 2020s | 11,274 | 24,140 |
| 2010s | 25,033 | 10,297 |
| 2000s | 43,118 | 620 |
| 1990s | 35,178 | 107 |
| 1980s | 15,316 | 36 |
| 1970s | 9,134 | 0 |
| 1960s | 3,099 | 0 |
| 1950s | 1,713 | 0 |
| 1940s | 938 | 0 |
| 1930s | 775 | 0 |
| 1920s | 732 | 0 |
| 1910s | 228 | 0 |
| 1900s | 66 | 0 |
| 1890s | 10 | 0 |
| 1880s | 10 | 0 |
The Spanish form of Alexander, from the Greek Alexandros, combining alexein 'to defend, protect' and aner/andros 'man'. Carried through history by Alexander the Great and later by saints and kings.
A form of Tiago, drawn from Santiago ('Sant Iago', Saint James) by resegmenting San-Tiago. The 'Th' spelling is Portuguese-influenced and hugely popular across Latin America. Ultimately traces to the Hebrew Ya'aqov (Jacob), via James.
Thiago is more popular than Alejandro today: about 5,835 US babies were given the name Thiago in 2025, compared with 1,842 named Alejandro.
Alejandro means defender of the people (spanish origin), while Thiago means Saint James / James (spanish origin).
In US records, Alejandro first appears in 1885 and Thiago in 1986, so Alejandro has the longer recorded history.