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