Finnish
Etymology
A diminutive of Konstantin.
Pronunciation
- IPA(key): /ˈkostiɑn/, [ˈko̞s̠tiɑ̝n]
- Rhymes: -ostiɑn
- Syllabification(key): Kos‧ti‧an
- Hyphenation(key): Kos‧ti‧an
Proper noun
Kostian
- a Finnish surname
Declension
| Inflection of Kostian (Kotus type 5/risti, no gradation)
|
| nominative
|
Kostian
|
Kostianit
|
| genitive
|
Kostianin
|
Kostianien
|
| partitive
|
Kostiania
|
Kostianeja
|
| illative
|
Kostianiin
|
Kostianeihin
|
|
|
singular
|
plural
|
| nominative
|
Kostian
|
Kostianit
|
| accusative
|
nom.
|
Kostian
|
Kostianit
|
| gen.
|
Kostianin
|
| genitive
|
Kostianin
|
Kostianien
|
| partitive
|
Kostiania
|
Kostianeja
|
| inessive
|
Kostianissa
|
Kostianeissa
|
| elative
|
Kostianista
|
Kostianeista
|
| illative
|
Kostianiin
|
Kostianeihin
|
| adessive
|
Kostianilla
|
Kostianeilla
|
| ablative
|
Kostianilta
|
Kostianeilta
|
| allative
|
Kostianille
|
Kostianeille
|
| essive
|
Kostianina
|
Kostianeina
|
| translative
|
Kostianiksi
|
Kostianeiksi
|
| abessive
|
Kostianitta
|
Kostianeitta
|
| instructive
|
—
|
Kostianein
|
| comitative
|
See the possessive forms below.
|
| first-person singular possessor
|
|
|
singular
|
plural
|
| nominative
|
Kostianini
|
Kostianini
|
| accusative
|
nom.
|
Kostianini
|
Kostianini
|
| gen.
|
Kostianini
|
| genitive
|
Kostianini
|
Kostianieni
|
| partitive
|
Kostianiani
|
Kostianejani
|
| inessive
|
Kostianissani
|
Kostianeissani
|
| elative
|
Kostianistani
|
Kostianeistani
|
| illative
|
Kostianiini
|
Kostianeihini
|
| adessive
|
Kostianillani
|
Kostianeillani
|
| ablative
|
Kostianiltani
|
Kostianeiltani
|
| allative
|
Kostianilleni
|
Kostianeilleni
|
| essive
|
Kostianinani
|
Kostianeinani
|
| translative
|
Kostianikseni
|
Kostianeikseni
|
| abessive
|
Kostianittani
|
Kostianeittani
|
| instructive
|
—
|
—
|
| comitative
|
— |
Kostianeineni
|
| second-person singular possessor
|
|
|
singular
|
plural
|
| nominative
|
Kostianisi
|
Kostianisi
|
| accusative
|
nom.
|
Kostianisi
|
Kostianisi
|
| gen.
|
Kostianisi
|
| genitive
|
Kostianisi
|
Kostianiesi
|
| partitive
|
Kostianiasi
|
Kostianejasi
|
| inessive
|
Kostianissasi
|
Kostianeissasi
|
| elative
|
Kostianistasi
|
Kostianeistasi
|
| illative
|
Kostianiisi
|
Kostianeihisi
|
| adessive
|
Kostianillasi
|
Kostianeillasi
|
| ablative
|
Kostianiltasi
|
Kostianeiltasi
|
| allative
|
Kostianillesi
|
Kostianeillesi
|
| essive
|
Kostianinasi
|
Kostianeinasi
|
| translative
|
Kostianiksesi
|
Kostianeiksesi
|
| abessive
|
Kostianittasi
|
Kostianeittasi
|
| instructive
|
—
|
—
|
| comitative
|
— |
Kostianeinesi
|
| first-person plural possessor
|
|
|
singular
|
plural
|
| nominative
|
Kostianimme
|
Kostianimme
|
| accusative
|
nom.
|
Kostianimme
|
Kostianimme
|
| gen.
|
Kostianimme
|
| genitive
|
Kostianimme
|
Kostianiemme
|
| partitive
|
Kostianiamme
|
Kostianejamme
|
| inessive
|
Kostianissamme
|
Kostianeissamme
|
| elative
|
Kostianistamme
|
Kostianeistamme
|
| illative
|
Kostianiimme
|
Kostianeihimme
|
| adessive
|
Kostianillamme
|
Kostianeillamme
|
| ablative
|
Kostianiltamme
|
Kostianeiltamme
|
| allative
|
Kostianillemme
|
Kostianeillemme
|
| essive
|
Kostianinamme
|
Kostianeinamme
|
| translative
|
Kostianiksemme
|
Kostianeiksemme
|
| abessive
|
Kostianittamme
|
Kostianeittamme
|
| instructive
|
—
|
—
|
| comitative
|
— |
Kostianeinemme
|
| second-person plural possessor
|
|
|
singular
|
plural
|
| nominative
|
Kostianinne
|
Kostianinne
|
| accusative
|
nom.
|
Kostianinne
|
Kostianinne
|
| gen.
|
Kostianinne
|
| genitive
|
Kostianinne
|
Kostianienne
|
| partitive
|
Kostianianne
|
Kostianejanne
|
| inessive
|
Kostianissanne
|
Kostianeissanne
|
| elative
|
Kostianistanne
|
Kostianeistanne
|
| illative
|
Kostianiinne
|
Kostianeihinne
|
| adessive
|
Kostianillanne
|
Kostianeillanne
|
| ablative
|
Kostianiltanne
|
Kostianeiltanne
|
| allative
|
Kostianillenne
|
Kostianeillenne
|
| essive
|
Kostianinanne
|
Kostianeinanne
|
| translative
|
Kostianiksenne
|
Kostianeiksenne
|
| abessive
|
Kostianittanne
|
Kostianeittanne
|
| instructive
|
—
|
—
|
| comitative
|
— |
Kostianeinenne
|
| third-person possessor
|
|
|
singular
|
plural
|
| nominative
|
Kostianinsa
|
Kostianinsa
|
| accusative
|
nom.
|
Kostianinsa
|
Kostianinsa
|
| gen.
|
Kostianinsa
|
| genitive
|
Kostianinsa
|
Kostianiensa
|
| partitive
|
Kostianiaan
Kostianiansa
|
Kostianejaan
Kostianejansa
|
| inessive
|
Kostianissaan
Kostianissansa
|
Kostianeissaan
Kostianeissansa
|
| elative
|
Kostianistaan
Kostianistansa
|
Kostianeistaan
Kostianeistansa
|
| illative
|
Kostianiinsa
|
Kostianeihinsa
|
| adessive
|
Kostianillaan
Kostianillansa
|
Kostianeillaan
Kostianeillansa
|
| ablative
|
Kostianiltaan
Kostianiltansa
|
Kostianeiltaan
Kostianeiltansa
|
| allative
|
Kostianilleen
Kostianillensa
|
Kostianeilleen
Kostianeillensa
|
| essive
|
Kostianinaan
Kostianinansa
|
Kostianeinaan
Kostianeinansa
|
| translative
|
Kostianikseen
Kostianiksensa
|
Kostianeikseen
Kostianeiksensa
|
| abessive
|
Kostianittaan
Kostianittansa
|
Kostianeittaan
Kostianeittansa
|
| instructive
|
—
|
—
|
| comitative
|
— |
Kostianeineen
Kostianeinensa
|
|
Derived terms
Statistics
- The surname Kostian belongs to 110 individuals, according to August 2025 data from the Digital and Population Data Services Agency of Finland.