Declension of surnames

At the Optometry Clinic

When checking in a patient (pacijent) at the optician's (optika), you will often need to look up their surname (prezime).

The new patient is waiting at the optician's.
Novi pacijent čeka u optici.
His name is Ivan, and his surname is Horvat.
Njegovo ime je Ivan, a prezime Horvat.

Declining Masculine Surnames

In Croatian, when a man's name changes case, both his first name and his surname must decline. The surname takes the standard endings for masculine nouns.

CaseFirst NameSurname
NominativeIvanHorvat
Genitive / AccusativeIvanaHorvata
DativeIvanuHorvatu
InstrumentalIvanomHorvatom

Notice how the surname "Horvat" mirrors the case endings of "Ivan" across different roles in the sentence, such as the accusative for a direct object, the instrumental for "with", and the genitive for "from".

We are waiting for the patient Ivan Horvat.
Čekamo pacijenta Ivana Horvata.
The doctor is talking with Ivan Horvat.
Liječnik razgovara s Ivanom Horvatom.
We are reading the diopter from Ivan Horvat's file.
Čitamo dioptriju iz kartona Ivana Horvata.

Declining Feminine Surnames

Feminine surnames behave differently. While a woman's first name declines according to standard feminine rules, her surname never changes. It remains frozen in its nominative form regardless of the grammatical case.

CaseFirst NameSurname
NominativeAnaHorvat
GenitiveAneHorvat
DativeAniHorvat
AccusativeAnuHorvat
InstrumentalAnomHorvat

Observe how "Ana" changes, but "Horvat" does not.

Ana Horvat has a new diopter for glasses.
Ana Horvat ima novu dioptriju za naočale.
Do you have the file for Ana Horvat?
Imate li karton za Anu Horvat?
She is talking with Ana Horvat about the frame.
Razgovara s Anom Horvat o okviru.

Putting It All Together

You must always pay attention to the patient's gender to know if their surname should decline.

Here are both rules side-by-side in the dative case, showing for whom the action is performed:

We are measuring the diopter for Ivan Horvat.
Mjerimo dioptriju Ivanu Horvatu.
We are measuring the diopter for Ana Horvat.
Mjerimo dioptriju Ani Horvat.

And again in the accusative case (following the preposition za):

In the optometry clinic, we have lenses for Ivan Horvat and a frame for Ana Horvat.
U optici imamo leće za Ivana Horvata i okvir za Anu Horvat.