| Nyx | Callista | |
|---|---|---|
| Meaning | night | Most beautiful |
| Origin | greek | greek |
| Gender | Girl | Girl |
| Pronunciation | NIKS | kuh-LIS-tuh |
| Syllables | 1 | 3 |
| First appeared | 2008 | 1914 |
| Peak year | 2022 (84) | 1999 (137) |
| In 2025 | 68 | 42 |
| Trend | Rising | Declining |
Source: US Social Security Administration.
| Decade | Nyx | Callista |
|---|---|---|
| 2020s | 381 | 250 |
| 2010s | 144 | 567 |
| 2000s | 10 | 901 |
| 1990s | 0 | 424 |
| 1980s | 0 | 197 |
| 1970s | 0 | 44 |
| 1960s | 0 | 5 |
| 1950s | 0 | 28 |
| 1930s | 0 | 6 |
| 1920s | 0 | 23 |
| 1910s | 0 | 40 |
From Greek 'nyx' meaning 'night'. Nyx is the primordial Greek goddess and personification of the night — include as a deity name.
From Greek kallistos/kallistē 'most beautiful', the superlative of kalos, from kallos 'beauty'. Kalliste was a title of the goddess Artemis; the mythological nymph Kallisto bears the same root.
Nyx is more popular than Callista today: about 68 US babies were given the name Nyx in 2025, compared with 42 named Callista.
Nyx means night (greek origin), while Callista means Most beautiful (greek origin).
In US records, Nyx first appears in 2008 and Callista in 1914, so Callista has the longer recorded history.