🇷🇺 Russian phrases

How to Say "I don't know" in Russian

The SPAIKING TeamJuly 27, 2026
Я не знаю
"I don't know" in Russian · say it like yah nye znah-yoo

The most natural way to say "I don't know" in Russian is Я не знаю. Tap the speaker above to hear it, then say it back out loud. That is the fastest way to make it stick.

Other ways to say it

Не знаю
A more casual way to say it.
Я не уверен/уверена
Used when expressing uncertainty.

When to use it

You can use this phrase when you genuinely do not have the information someone is asking for. It is appropriate in both formal and informal settings. It can also express uncertainty about a topic.

Say it out loud, get corrected

Reading it is not the same as saying it. Practice "I don't know" and thousands more with an AI coach that listens.

Examples in Russian

RussianEnglish
Я не знаю, где он.I don't know where he is.
Не знаю, что делать.I don't know what to do.
Common mistake
Learners often forget to use the correct form of 'I' (Я) in front of the phrase.

The fastest way to remember it

Vocabulary you only read fades fast. Vocabulary you say out loud sticks. Hear Я не знаю, repeat it a few times, then use it in a real sentence. SPAIKING lets you practice exactly that, speaking Russian with a coach that corrects your pronunciation in real time. You can start with two free conversations.

Frequently asked questions

Can I use this phrase in a formal conversation?

Yes, it is appropriate in both formal and informal contexts.

Learn Russian by speaking it

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