This list covers 21 Slavic boy names starting with “I,” running from “Ivan” to “Izot.” Most trace back to Old Slavic, Greek, or Norse roots, and many carry meanings tied to faith, strength, or peace. Parents across Russia, Ukraine, Poland, and the Balkans still use these names today, while others survive mainly in church records and family trees.

Slavic boy names are given names rooted in the Slavic-speaking cultures of Eastern Europe and the Balkans, often shaped by Orthodox and Catholic naming traditions. Many were adapted from Greek or Norse originals, then reshaped by local pronunciation and spelling. Ivaylo, for instance, honors a 13th-century Bulgarian peasant who became tsar, turning a common name into a symbol of triumph.

Below you’ll find the table with the name, country, pronunciation, meaning, and description of each one.

Name: the given name itself, shown in its standard Slavic spelling so you can recognize it in different regional contexts.

Country: the country or countries where the name is most common, helping you place it within a specific Slavic culture.

Pronunciation: a simple phonetic guide that shows you how to say the name correctly without needing linguistic training.

Meaning: the literal or historical meaning behind the name, giving you insight into what it represented to the people who used it.

Description: background on the name’s origin, notable bearers, or cultural significance, so you understand where it comes from and why it matters.

Slavic boy names

NameCountryPronunciationMeaning
IvanRussia, Ukraine, Serbia, Croatia, Poland, and across the Slavic worldEE-vahn“God is gracious”
IgorRussiaEE-gor“warrior” or “Ing’s warrior”
IhorUkraineEE-hor“warrior” (Ukrainian form of Igor)
IlyaRussiaEEL-yah“Yahweh is God” (form of Elijah)
IlijaSerbia, Croatia, Bosnia, North Macedoniaee-LEE-yah“the Lord is God” (form of Elijah)
IvicaCroatiaEE-vee-tsahdiminutive of Ivan, “God is gracious”
IvoCroatia, Czech RepublicEE-vohshort form of Ivan
IvayloBulgariaee-VAI-lohorigin debated, closely tied to Ivan
IskrenBulgariaees-KREN“sincere” or “honest”
IziaslavRussia, Ukraine (historical)ee-zee-ah-SLAHF“one who seized glory”
InnokentyRussiaee-noh-KYEN-tee“innocent”
IreneuszPolandee-reh-NEH-oosh“peace” (from Greek Eirenaios)
IzydorPolandee-ZIH-dor“gift of Isis” (from Greek Isidoros)
IwoPolandEE-vohpossibly from an old Germanic or Slavic root meaning “yew”
IlarionRussiaee-lah-ree-OHN“cheerful” (from Greek Hilarion)
IpolitRussiaee-poh-LEET“one who frees horses” (from Greek Hippolytos)
IrinejSerbia, Sloveniaee-REE-nay“peace” (Slavic form of Irenaeus)
IzidorSlovenia, Croatiaee-ZEE-dor“gift of Isis” (variant of Izydor/Isidore)
IvankoBulgaria, Ukraineee-VAHN-kohdiminutive of Ivan
IlkoUkraineEEL-kohdiminutive of Ilya
IzotRussiaEE-zoht“full of life” (from Greek Zotikos)

Descriptions

Ivan
The most widespread Slavic male name, a direct equivalent of “John.” It has been carried by tsars, kings, and countless everyday men across nearly every Slavic-speaking country.
Igor
Adapted from the Old Norse name Ingvar by early Russian rulers, Igor became a staple Russian name and was borne by several medieval princes of Kievan Rus’.
Ihor
The Ukrainian spelling and pronunciation of Igor, reflecting Ukrainian’s distinct “h” sound. It remains a common given name in Ukraine today.
Ilya
The Russian version of the biblical prophet Elijah’s name. It is also tied to Ilya Muromets, the legendary knight-hero of Russian folklore.
Ilija
The South Slavic counterpart to Ilya, popular across the Balkans and often shortened to the nickname “Ile” or “Ilijica.”
Ivica
A common Croatian nickname-turned-given-name derived from Ivan, used as a standalone first name for boys and men.
Ivo
A short, punchy name used independently across Croatia and the Czech Republic, often linked to medieval Slavic nobility and saints.
Ivaylo
Best known from Ivaylo, a 13th-century Bulgarian peasant who became tsar after leading a successful uprising, making the name a symbol of humble triumph.
Iskren
A modern Bulgarian name taken directly from the everyday word for sincerity, reflecting a Slavic naming tradition of using virtue words as given names.
Iziaslav
An old East Slavic princely name combining roots for “to take” and “glory,” borne by several rulers of Kievan Rus’ in the 11th and 12th centuries.
Innokenty
A Russian Orthodox name derived from the Latin Innocentius, historically favored for boys born on or near feast days honoring saints of that name.
Ireneusz
A traditional Polish name honoring early Christian saints named Irenaeus, still found among older generations of Polish men.
Izydor
The Polish rendering of Isidore, popularized through veneration of Saint Isidore the Laborer, patron of farmers.
Iwo
A short, historic Polish name dating to the medieval period, later associated with 13th-century Polish bishop Saint Iwo Odrowąż.
Ilarion
A Russian Orthodox name honoring Saint Hilarion, chosen for its association with joy and good spirits.
Ipolit
A rare but historic Russian name derived from Greek mythology’s Hippolytus, kept alive mainly through Orthodox naming traditions.
Irinej
Used in Serbian and Slovenian Orthodox and Catholic traditions alike, this name has been notably borne by Serbian Orthodox patriarchs.
Izidor
The South Slavic spelling of Isidore, honoring the same patron saint of farmers venerated across Catholic Slavic regions.
Ivanko
A warm, familiar form of Ivan used as a given name in its own right, especially in Bulgarian and Ukrainian communities.
Ilko
A friendly Ukrainian short form of Ilya, occasionally used as an independent first name rather than just a nickname.
Izot
A rare, old-fashioned Russian name rooted in early Christian Greek naming traditions, seldom used today but still found in genealogical records.
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