Declining Greek Names and Surnames

Names are nouns, and in Greek that means Greek-pattern names decline. Γιώργος becomes του Γιώργου when it is a possessor and τον Γιώργο when it is an object, exactly like δρόμος → του δρόμου → τον δρόμο. Most of this page is therefore about applying paradigms you already have. But three things about names are genuinely their own: the surname system, the invariant traditional feminine surname forms, and the accent, which may stay put on names where a common noun would move it. Foreign and otherwise indeclinable names are treated separately below.

Note that this page is about morphology — what shape the name takes. Whether a name gets an article at all, and when it does not, is a separate question handled on Articles with names and places.

First names: the ordinary classes

Male and female first names slot straight into the noun declensions. Here are the four you will use every day.

In these frequent masculine models, the genitive and accusative drop nominative -ς, and an -ος name adds -υ in the genitive (Γιώργος → Γιώργου). The vocative of -ος names has a lexical split: common short names often match the accusative (Γιώργο), while many longer names take -ε (Αλέξανδρε). The feminine pattern is simpler: add -ς in the genitive and change nothing else.

That last one is worth pausing on: από του Γιάννη with nothing after it means "from Yannis's (house)". Greek can leave the possessed noun out entirely and let the bare genitive stand for the home, shop or office of the person — στου Νίκου, στης Ελένης. English has the same trick in at John's, and it is one of the few places where the two languages line up exactly.

There is also a small feminine class in -ώ: η Αργυρώ, η Φρόσω, η Μαριγώ. These take a genitive in -ώς and nothing else changes.

The accent does not move on a name

Take the common noun ο άνθρωπος. Its genitive shifts the stress forward: του ανθρώπου. Now take the name ο Αλέξανδρος, which has exactly the same shape. Everyday Greek leaves the accent where it is: του Αλέξανδρου. Names resist the shift that common nouns undergo, and this is one of the clearest ways Greek marks something as a name rather than a word.

The shifted form still exists — it is the learned genitive, and it is what you meet in historical, ecclesiastical and official contexts. Both of the sentences below are correct; they are not competing options but different registers, and mixing them up is what sounds wrong.

Masculine surnames

Surnames decline, but by their own ending, not by the ending of the first name they sit next to. Four types cover nearly everything.

The fourth row is the interesting one. A surname in -ου is already a genitive, so it has nowhere left to go: it is indeclinable, and only the article in front of it moves. Ο Παπαγεωργίου, του Παπαγεωργίου, τον Παπαγεωργίου — one shape, four jobs. The same applies to -όγλου surnames of Anatolian origin (Χατζόγλου, Ασλάνογλου), where -oğlu is Turkish for "son of" and the word simply does not inflect in Greek.

Note the split in the vocative: a masculine surname in -ος takes -ε (Παπαδόπουλε), like a common noun. Many common short first names take -ο (Γιώργο, Νίκο, Πέτρο), but longer names often take -ε (Αλέξανδρε, Στέφανε, Φίλιππε). Stress shape is only a clue; the choice is lexical, and the full picture is on The vocative case.

Traditional feminine Greek surnames are frozen genitives

In the inherited Greek surname system, the conventional feminine form is historically the genitive of the corresponding masculine surname, and it does not decline further. Only the article or title in front of it changes. This explains Παπαδοπούλου, Παπαδάκη, Ιωαννίδου; an indeclinable foreign surname can also remain unchanged, but is not thereby a Greek genitive.

Παπαδοπούλου is not a feminine ending that happens to look odd. It is, literally, the phrase "of Papadopoulos" — originally "the daughter of Papadopoulos" — that hardened into a name. Once you see that, the invariability stops being arbitrary: a form that is already genitive cannot be put into the accusative, any more than English John's can.

The core Greek types have these conventional feminine counterparts:

Look closely at the first row and you will spot something the tables above set up. The masculine genitive is του Παπαδόπουλου, with the accent unmoved — because names resist the shift. The feminine surname is Παπαδοπούλου, with the accent moved to -πού- — because it comes from the learned genitive, formed back when the shift was obligatory. The two genitives split into two different words, and the woman's name preserves the older one.

Three sentences, three cases, one unchanging Παπαδοπούλου. Everything around it moves — η κυρία / της κυρίας / την κυρία — and the surname sits there like a stone. That is the whole rule.

The family plural

To talk about a whole household, Greek pluralises the surname. The -ος type takes the ordinary masculine plural, and the -ης type takes the -ηδες plural that also covers colloquial trade nouns (see Masculine nouns in -ης):

• ο Παπαδόπουλος → οι Παπαδόπουλοι (των Παπαδόπουλων)
• ο Παπαδάκης → οι Παπαδάκηδες (των Παπαδάκηδων)
• ο Παπαγεωργίου → οι Παπαγεωργίου — indeclinable, as always

Foreign names

Non-Greek names are almost all indeclinable: they take an article, which does the case work, and the name itself never changes. Ο Τζον, του Τζον, τον Τζον. Η Σάρα, της Σάρα, τη Σάρα.

Two exceptions are worth knowing. Names that already look Greek get declined normally — a Cypriot Χριστοδούλου behaves like any -ου surname, and a Slavic or Italian name ending in -ος or -ας will usually be pulled into the matching class. And a handful of famous historical names have long-established Hellenised forms that decline: ο Ναπολέοντας → του Ναπολέοντα, ο Σαίξπηρ (indeclinable) but ο Νεύτωνας → του Νεύτωνα. Everything else stays put.

Common Mistakes

1. Treating a conventional feminine surname like an ordinary feminine noun. Its inherited form remains invariant across cases.

2. Adding ordinary feminine endings to Παπαδάκη. This surname is likewise invariant, even though it resembles an ordinary -η noun.

3. Giving a surname the first-name vocative. Surnames in -ος take -ε, not -ο.

4. Forgetting that a -ης first name loses -ς in the genitive. Compare the nominative and genitive forms rather than inventing an -ου form.

5. Forcing an -ου surname into a new accusative form. The surname remains unchanged and the article carries the case.

Key Takeaways

• First names decline like ordinary nouns: Γιώργος → του Γιώργου, Γιάννης → του Γιάννη, Κώστας → του Κώστα, Μαρία → της Μαρίας, Ελένη → της Ελένης. The feminine genitive is just
  • -ς
  .
• The accent does not shift on a name the way it does on a common noun: everyday του Αλέξανδρου, learned/historical του Αλεξάνδρου.
• Masculine surnames decline by their own ending (-ος, -ης, -ας), except those in -ου / -όγλου, which are already genitives and are indeclinable.
• Conventional feminine Greek surname forms remain invariant: η / της / την Παπαδοπούλου. Forms such as Παπαδοπούλου and Παπαδάκη are inherited genitives of masculine surnames; foreign indeclinable surnames are a separate pattern.
• Vocative split: surnames in -ος take -ε (Παπαδόπουλε); common short first names often take -ο (Γιώργο), while many longer names take -ε (Αλέξανδρε). Learn the form with the name.
• Family plurals: οι Παπαδόπουλοι, οι Παπαδάκηδες.
• Foreign names are indeclinable and rely entirely on the article.