
The short answer
Atreus is a masculine name used in Greek Mythology. Behind the Name describes it this way: "Means ‘fearless’, derived from the Greek negative prefix ἀ (a) and τρέω (treo) meaning ‘to fear, to flee’. In Greek mythology, Atreus was a king of Mycenae and the father of Agamemnon and Menelaus." It ranked #582 for boys in the United States in 2025.
Meaning and etymology
According to Behind the Name, means ‘fearless’, derived from the Greek negative prefix ἀ (a) and τρέω (treo) meaning ‘to fear, to flee’. In Greek mythology, Atreus was a king of Mycenae and the father of Agamemnon and Menelaus. The entry lists its usage as Greek Mythology.
Editorial confidence: established
Popularity
Atreus ranked #582 for boys in the United States in 2025. The figure comes from the Social Security Administration's national file for that year.
| Region | Year | Rank | Source |
|---|---|---|---|
| United States | 2025 | #582 | ssa-2025 |
If you like this name
Names that Behind the Name files under the same origin (Greek Mythology) and that sit near Atreus in the 2025 American rankings.
Similar by origin
Frequently asked questions
What does the name Atreus mean?
Atreus means "fearless", according to Behind the Name.
Is Atreus a popular name?
Atreus ranked #582 for boys in the United States in 2025. (Social Security Administration data).
Is Atreus a boy's or a girl's name?
In the 2025 SSA data Atreus appears in the boys' list; Behind the Name labels it masculine.
Sources
- Behind the Name: Meaning, origin and history of the name Atreus — supports meaning, usage, pronunciation, variants.
- U.S. Social Security Administration: Popular Baby Names — national data, year of birth 2025 — supports popularity.