Personal pronouns (şahıs zamirleri) replace nouns referring to people or things. Turkish personal pronouns change form (decline) based on their grammatical case, similar to nouns.

Nominative Case (Basic Form):

Declension of Personal Pronouns:

Here's how "Ben" (I) and "Sen" (You) decline. Other pronouns follow similar patterns, often with vowel harmony. Note the irregular stem changes for "Ben" and "Sen" in some cases.

Ben (I)

• Nominative: Ben (I)
• Genitive: Benim (My, of me)
• Accusative: Beni (Me - direct object)
• Dative: Bana (To me) - Note the vowel change
• Locative: Bende (On me, with me, at my place)
• Ablative: Benden (From me)

Example: Ben okula gidiyorum. (I am going to school.) Bana yardım et. (Help me.)

Sen (You - singular informal)

• Nominative: Sen (You)
• Genitive: Senin (Your, of you)
• Accusative: Seni (You - direct object)
• Dative: Sana (To you) - Note the vowel change
• Locative: Sende (On you, with you, at your place)
• Ablative: Senden (From you)

Example: Sen ne yapıyorsun? (What are you doing?) Sana bir sır vereceğim. (I will give you a secret.)

O (He/She/It)

• Nominative: O
• Genitive: Onun (His/Her/Its, of him/her/it)
• Accusative: Onu
• Dative: Ona
• Locative: Onda
• Ablative: Ondan

The pronouns Biz (We), Siz (You - pl./formal), and Onlar (They) decline regularly by adding the standard case suffixes directly, following vowel harmony.
Example (Biz): Bizim (our), Bizi (us), Bize (to us), Bizde (with us), Bizden (from us).