| Thiago | Alejandro | |
|---|---|---|
| Meaning | Saint James / James | defender of the people |
| Origin | spanish | spanish |
| Gender | Boy | Boy |
| Pronunciation | tee-AH-go | ah-leh-HAHN-dro |
| Syllables | 2 | 4 |
| First appeared | 1986 | 1885 |
| Peak year | 2025 (5,835) | 2001 (4,557) |
| In 2025 | 5,835 | 1,842 |
| Trend | Near its peak | Declining |
Source: US Social Security Administration.
| Decade | Thiago | Alejandro |
|---|---|---|
| 2020s | 24,140 | 11,274 |
| 2010s | 10,297 | 25,033 |
| 2000s | 620 | 43,118 |
| 1990s | 107 | 35,178 |
| 1980s | 36 | 15,316 |
| 1970s | 0 | 9,134 |
| 1960s | 0 | 3,099 |
| 1950s | 0 | 1,713 |
| 1940s | 0 | 938 |
| 1930s | 0 | 775 |
| 1920s | 0 | 732 |
| 1910s | 0 | 228 |
| 1900s | 0 | 66 |
| 1890s | 0 | 10 |
| 1880s | 0 | 10 |
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.
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.
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.
Thiago means Saint James / James (spanish origin), while Alejandro means defender of the people (spanish origin).
In US records, Thiago first appears in 1986 and Alejandro in 1885, so Alejandro has the longer recorded history.