Kyrill
A masculine Russian variant of the Greek name Cyril, meaning "lordly".
Name Census estimates that about 6 living Americans carry the first name Kyrill. The name is used almost exclusively for boys. The average person named Kyrill today is around 5 years old, and the year with the single highest number of Kyrill births was 2021 (6 babies).
This page is the full Name Census profile for Kyrill. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • Fewer than 100 living Americans are believed to carry the name Kyrill. It is among the rarest names in the SSA records.
People living today
6
~ 1 in 57,125,723 Americans
Peak year
2021
6 babies that year
Average age
5
years old
2021 SSA rank
#11,543
Tracked since 2021
Popularity
Kyrill: popularity over time
Babies born per year
Decades
Kyrill by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Kyrill during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
| Decade | Male | Female | Total |
|---|---|---|---|
| 2020s | 6 | 0 | 6 |
Origin
Meaning and history of Kyrill
The name Kyrill finds its origins in the Greek language and culture, specifically derived from the word "Kyrios," meaning "lord" or "master." It emerged during the Byzantine era, around the 6th to 7th century AD, and was initially used as a masculine given name among Greek-speaking communities.
One of the earliest and most notable historical figures bearing this name was Kyrill, also known as Cyril of Alexandria, a prominent Christian theologian and Patriarch of Alexandria who lived from around 376 to 444 AD. He played a crucial role in the Council of Ephesus and was instrumental in the development of Christological doctrine.
Another significant figure in history was Kyrill, or Cyril of Jerusalem, a distinguished theologian and Bishop of Jerusalem who lived from around 313 to 386 AD. He is best known for his influential catechetical lectures, which provided insights into the liturgical practices and beliefs of the early Christian Church.
In the 9th century, the name gained further prominence with the lives of two brothers, Kyrill and Methodius, who were Byzantine Christian missionaries and scholars. They are credited with devising the Glagolitic alphabet, which facilitated the spread of Christianity among the Slavic peoples. Kyrill, also known as Constantine the Philosopher, was instrumental in translating biblical texts and liturgical books into the Slavic language.
Another notable figure was Kyrill Lukaris, a Greek scholar, and Patriarch of Constantinople, who lived from 1572 to 1638. He played a significant role in the Protestant Reformation and attempted to introduce Calvinistic teachings into the Eastern Orthodox Church.
In the realm of literature, Kyrill Turovskiy, a 12th-century Rus' writer and theologian, is renowned for his eloquent sermons and writings, which are considered masterpieces of Old East Slavic literature.
Throughout history, the name Kyrill has been associated with various individuals from different cultural and religious backgrounds, reflecting its enduring presence and adaptability across different regions and contexts.
People
Kyrill + last name combinations
How many people share a full name with Kyrill as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with K
Other first names starting with K with a similar number of bearers.
FAQ
Kyrill: questions and answers
How many people in the U.S. are named Kyrill?
Name Census puts the figure at roughly 6 living Americans. We arrive at this by taking every SSA birth registration for Kyrill going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 57,125,723 US residents.
Is Kyrill a common name?
We classify Kyrill as "Very Rare". It ranks above 22.3% of all first names in the SSA dataset by living bearers. Across the full history of the data, 6 babies have been registered with this name.
When was Kyrill most popular?
The single biggest year for Kyrill was 2021, when 6 babies received the name. The fact that the average living Kyrill is about 5 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Kyrill in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Kyrill a male name?
Yes, 100.0% of people registered as Kyrill in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Kyrill still being used today?
Yes. The SSA still recorded Kyrill in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Kyrill can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
Does every first name have Census demographic data?
No. The public Census first-name release only covers names that met the Bureau's publication rules, so many rarer names in the SSA files do not have a published Census demographic snapshot. In those cases, the page still shows the SSA trend, gender history, and state data.
How many people are named Kyrill?
Want to know how many people have the name Kyrill? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.