This list includes 8 Latin boy names that start with I, from “Ianuarius” to “Iuvenalis (Juvenal)”. They range from common saint and calendar names to rarer classical and family names, useful for parents, writers, and researchers.

Latin boy names that start with I are male given names from Latin sources and Roman cultural usage. For example, “Ianuarius” connects to the month January, while “Iuvenalis” names a famous Roman satirist.

Below you’ll find the table with Name, Pronunciation, Meaning, and Notes.

Name: The primary Latin form of each name, which you can use as a basis for modern variants or choices.

Pronunciation: Simple respelling or IPA to help you say the name correctly, useful when checking sound and flow.

Meaning: A short etymology or concise meaning in three to ten words, so you quickly grasp the name’s origin.

Notes: Historical context, famous bearers, or usage notes that help you decide whether the name fits your needs.

Latin boy names that start with I

NamePronunciationMeaningAttestation/Source
Iulius (Julius)/ˈjuː.li.us/ “YOO-lee-us”Old Roman family name; ‘descendant of Iulus’Roman gens Julia; Caesar, Augustus
Iulus/ˈjuː.lus/ “YOO-lus”Mythic founder; possibly ‘little’ or linked to IlusVirgil; Roman foundation myth (Ascanius Iulus)
Ianus (Janus)/ˈjaː.nus/ “YAH-nus”God of gates and beginningsRoman deity; Ovid and ritual texts
Ianuarius/jaːˈnuː.a.ri.us/ “yah-NOO-ah-ri-us”Of Janus; ‘of January’Latin month name; funerary and civic inscriptions
Iustus/ˈjus.tus/ “YOOS-tus”Just, fairInscriptions; early Christian saints; Roman cognomina
Iustinus (Justinus)/juːˈstɪ.nus/ “yoo-STEE-nus”Belonging to the justSaints; Christian writers (Justin Martyr)
Iunius (Junius)/ˈjuː.ni.us/ “YOO-nee-us”Of Juno; connected to JuneRoman gens Junia; Republican inscriptions
Iuvenalis (Juvenal)/juːˈwe.na.lis/ “yoo-VEN-a-lis”Youthful; ‘young’Poet Decimus Iunius Iuvenalis (Juvenal)

Descriptions

Iulius (Julius)
Famous Roman nomen of Caesar and Augustus; evokes imperial Rome and survives across modern languages.
Iulus
Legendary son of Aeneas and ancestral name of the Julii; strong mythic resonance.
Ianus (Janus)
Primarily a deity’s name; rare as a personal name but culturally significant (January named after him).
Ianuarius
Month-name occasionally attested as a personal name in late antiquity and medieval records.
Iustus
A straightforward Latin virtue-name used in antiquity and Late Antiquity; ancestor of modern Justin/Justus.
Iustinus (Justinus)
Popular Christian-era name from early saints and writers; gives modern Justin.
Iunius (Junius)
Roman nomen/gentile name; occasionally used as a personal name and preserved in modern form.
Iuvenalis (Juvenal)
Best known as the satirical poet Juvenal; originally a cognomen meaning ‘youthful’.
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