MallowbyNames

Kyrillos

Κύριλλοςkih-RIL-ohs · Of uncertain origin; possibly related to the Greek name Cyril, meaning 'lordly' or 'masterful'.

2025 rank (boys)
#8,910
Babies named in 2025
8
Peak popularity
2013
2025 frequency
1 in 213,510 boys
Usually for
Boys
Trend
Declining since 2013

Declining since 2013, #8,910 for boys today.

Popularity of Kyrillos since 1993

Babies named Kyrillos per year in U.S. Social Security records.

71320200020102020Most births 2013Boys
Data table (by decade)
DecadeBoys
1990s22
2000s69
2010s129
2020s35

Meaning & origin

Kyrillos is a name with deep roots in early Christianity, particularly within the Greek Orthodox and Coptic traditions. It is the Hellenized form of Cyril, borne by Saint Cyril of Alexandria, a fourth-century theologian whose writings shaped Christian doctrine. In the United States, the name first appeared on the Social Security rolls in 1993, reflecting immigration patterns from Greek and Coptic communities. Its peak year was 2013, when it reached rank 8,910, with about 1 in 213,510 newborns given the name in the latest year of data (2025). The name has since trended downward, aligning with a broader decline in traditional religious names. Despite its low frequency, Kyrillos remains a meaningful choice for families honoring Coptic or Greek heritage, though it is not concentrated in any particular U.S. state. Its rarity ensures a distinctive identity while maintaining a connection to ancient linguistic and religious traditions.

Kyrillos is the Greek and Coptic form of Cyril, derived from the Greek 'kyrios' (lord). The name is closely associated with Saint Cyril of Alexandria, a prominent theologian, and was carried by many early Christian saints. In Arabic-speaking contexts, it is often used among Coptic Christians in Egypt.

Nicknames & variants

Nicknames: Ky, Kiro, Rillo

Variants: Cyril, Cyrillus, Kirill, Kyril

Sibling names for Kyrillos

Names that share Kyrillos's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

K is for Kyrillos, our favorite little boy.

K is for Kyrillos…”

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Questions parents ask

What does the name Kyrillos mean?
The exact meaning is uncertain, but it is widely considered to derive from the Greek 'kyrios', meaning 'lord' or 'master'. It is the Greek and Coptic form of Cyril.
How popular is the name Kyrillos?
In the most recent year of data (2025), Kyrillos ranked 8,910 in the United States, with about 1 in 213,510 newborns given the name. Its peak popularity was in 2013, when it ranked higher.
Is Kyrillos a boy's name or a girl's name?
Kyrillos is traditionally a masculine name, used almost exclusively for boys in Greek, Coptic, and Arabic contexts.