कौन and किस person questions | Hindi Grammar

Hindi asks about a person with direct कौन “who?” but changes the pronoun to किस before a postposition or case marker: किसने, किसको, किससे, किसका. For a clearly plural set, careful Hindi can use plural oblique किन, as in किन लोगों से “with which people.”

This direct–oblique alternation is the same grammatical logic that changes many nouns and pronouns before postpositions. English usually keeps who unchanged in speech, so learners must actively associate किस with the following case relation.

Direct कौन: an unknown subject or identity

Use कौन without a postposition when asking for the identity of a subject or a person named by a copular predicate.

दरवाज़े पर कौन है?

darvāze par kaun hai?

Who is at the door?

कल हमारे साथ कौन आएगा?

kal hamāre sāth kaun āegā?

Who will come with us tomorrow?

इस परियोजना की प्रभारी कौन हैं?

is pariyojnā kī prabhārī kaun haiṃ?

Who is in charge of this project? (respectful reference)

The form कौन itself does not mark gender. Agreement can reveal assumptions or known features: आएगा anticipates one male or treats an unknown singular referent with the default masculine form; आएगी would be appropriate when the answer is expected to be a woman. Honorific हैं may respectfully refer to one office-holder.

नई डॉक्टर कौन हैं?

naī ḍokṭar kaun haiṃ?

Who is the new doctor? (female, respectful)

Hindi normally leaves कौन in its ordinary focused position. Unlike English who, it does not have to move to the beginning.

आज रात खाना कौन बनाएगा?

āj rāt khānā kaun banāegā?

Who will cook dinner tonight?

Here आज रात खाना establishes the setting and task; कौन immediately before the verb is the requested focus. Fronted कौन आज रात खाना बनाएगा? is possible in marked contexts but is not the neutral pattern a learner should imitate automatically.

💡

Use कौन only when no postposition follows the interrogative. Once a case marker or postposition is needed, switch to किस or plural किन.

किसने: asking for the perfective transitive agent

In a perfective transitive clause, an agent ordinarily takes ने. Therefore “who did it?” is often किसने ... किया?, not bare कौन.

यह संदेश किसने भेजा?

yah sandeś kisne bhejā?

Who sent this message?

खिड़की किसने खोली?

khiṛkī kisne kholī?

Who opened the window?

The verb agrees with the unmarked object when possible: masculine संदेश gives भेजा, while feminine खिड़की gives खोली. The unknown agent remains encoded inside किसने.

Not every past event takes ने. Intransitive आना asks कौन आया?, not किसने आया? The case marker follows the verb's construction, not the English tense label.

किसको and किसे: object and recipient questions

Before को, direct कौन becomes किस. Both full किसको and fused किसे are standard; किसे is especially frequent in conversation and concise prose.

आपने निमंत्रण किसको भेजा?

āpne nimantraṇ kisko bhejā?

Whom did you send the invitation to? (respectful)

हमें स्टेशन पर किसे लेना है?

hameṃ sṭeśan par kise lenā hai?

Whom do we need to pick up at the station?

तुम किसको ढूँढ़ रहे हो?

tum kisko ḍhū̃ṛh rahe ho?

Who are you looking for? (familiar, male or mixed addressee)

Hindi does not require को for every human object in every imaginable context, but specific human objects strongly favor it. At A2, किसको/किसे is the dependable choice for “whom?” as a specific object or recipient.

किससे, किसके साथ, and other postpositions

Postpositions require the oblique form किस:

आप कल किससे मिले थे?

āp kal kisse mile the?

Who did you meet yesterday? (respectful, male addressee)

अनु किसके साथ जयपुर गई है?

anu kiske sāth jaypur gaī hai?

Who has Anu gone to Jaipur with?

यह चिट्ठी किसके लिए है?

yah ciṭṭhī kiske lie hai?

Who is this letter for?

In spelling, किससे and किसको are joined, while compound postpositions are written separately after the genitive-looking connector: किसके साथ, किसके लिए, किसके बारे में. The choice of postposition expresses the role; किस merely supplies the unknown person.

For “whose,” किसका/किसके/किसकी agrees with the possessed item, not with the unknown owner:

मेज़ पर किसकी किताब पड़ी है?

mez par kiskī kitāb paṛī hai?

Whose book is lying on the table?

बाहर किसके जूते रखे हैं?

bāhar kiske jūte rakhe haiṃ?

Whose shoes are kept outside?

Feminine किताब selects किसकी; masculine plural जूते selects किसके. The owner's gender is irrelevant. This agreement is explained more broadly on oblique किस and किन.

Plural किन and choosing from a set

When the question explicitly concerns several people, formal and careful usage distinguishes plural oblique किन.

आपने किन उम्मीदवारों को साक्षात्कार के लिए बुलाया?

āpne kin ummīdvāroṃ ko sākṣātkār ke lie bulāyā?

Which candidates did you invite for an interview? (formal, respectful)

तुम किन दोस्तों के साथ यात्रा कर रहे हो?

tum kin dostoṃ ke sāth yātrā kar rahe ho?

Which friends are you traveling with? (familiar)

Everyday Hindi often uses किस-किस to ask “which people / who all,” emphasizing individual members:

शादी में किस-किस को बुलाया है?

śādī meṃ kis-kis ko bulāyā hai?

Who all has been invited to the wedding? (informal)

There is genuine variation here. किन लोगों को is transparent and careful; किस-किस को is highly natural conversationally. Do not treat one as a mechanical replacement for the other in every register.

Yes-no contrast and clause-initial क्या

Compare a complete proposition introduced by polar क्या with a person gap filled by कौन:

क्या रोहन आज प्रस्तुति देगा?

kyā rohan āj prastuti degā?

Will Rohan give the presentation today?

आज प्रस्तुति कौन देगा?

āj prastuti kaun degā?

Who will give the presentation today?

The first expects yes or no. The second expects a person's identity. Hindi does not normally add polar क्या merely because कौन already makes the sentence a question.

Formal, informal, and echo questions

क्षमा कीजिए, मुझे किससे बात करनी चाहिए? — आप प्रबंधक से बात कीजिए।

kṣamā kījie, mujhe kisse bāt karnī cāhie? — āp prabandhak se bāt kījie.

Excuse me, whom should I speak to? — Please speak to the manager. (formal, respectful)

तू किसके घर जा रहा है? — अमन के घर।

tū kiske ghar jā rahā hai? — aman ke ghar.

Whose house are you going to? — Aman's. (intimate, male addressee)

An echo question can signal that the answer was unheard or surprising:

समीरा ने इस्तीफ़ा दे दिया। — किसने इस्तीफ़ा दे दिया?

samīrā ne istīfā de diyā. — kisne istīfā de diyā?

Sameera has resigned. — Who has resigned? (echo question)

The strong prominence on किसने asks for repair. It does not change the case required by ने.

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Do not choose कौन or किस by English “who” versus “whom” alone. Build the Hindi clause first; its required case marker determines whether direct कौन or oblique किस/किन appears.

Common Mistakes

❌ कौन ने यह तस्वीर खींची?

Incorrect—कौन must change to oblique किस before ने.

✅ किसने यह तस्वीर खींची?

kisne yah tasvīr khīñcī?

Who took this picture?

❌ आप कौन के साथ आए हैं?

Incorrect—bare कौन cannot stand before के साथ.

✅ आप किसके साथ आए हैं?

āp kiske sāth āe haiṃ?

Who have you come with? (respectful)

❌ किस आया है?

Incorrect—an unmarked subject takes direct कौन, not oblique किस.

✅ बाहर कौन आया है?

bāhar kaun āyā hai?

Who has come outside?

❌ किसका बहन फ़ोन कर रही है?

Incorrect agreement—किसका must agree with feminine बहन.

✅ किसकी बहन फ़ोन कर रही है?

kiskī bahan fon kar rahī hai?

Whose sister is calling?

Key Takeaways

Use direct कौन for an unmarked subject or identity; use किस before singular/unspecified postpositions and case markers.
Frequent forms include किसने, किसको/किसे, किससे, किसके साथ, and agreeing किसका/किसके/किसकी.
Careful plural questions can use किन, while conversational किस-किस asks “who all.”
Hindi wh-words normally remain in their focused clause position; English-style fronting and inversion are unnecessary.
Initial क्या asks whether a proposition is true, whereas कौन/किस asks which person fills a role.

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