Yes, you can say I don't know in a media interview, as long as you immediately follow it with something you do know. That one move protects your credibility, keeps you from guessing on the record, and steers the answer back to ground where you are the expert.
I call it the I Don't Know Technique, and it is one of my favorite techniques out of everything I teach. The reason is simple: it can save you in the exact moment most spokespeople panic, when a reporter asks something you genuinely cannot answer.
Is it okay to say I don't know in an interview?
Most executives walk into an interview believing that admitting a gap is a sign of weakness. So they do one of two things. They bluff, or they freeze. Both are worse than the truth.
Bluffing puts a guess into the reporter's notebook with your name next to it. Freezing gives the audience a long, awkward pause that looks like you are hiding something. A plain "I don't know" is honest, but if it is the whole answer, you have handed the reporter dead air and wasted a chance to deliver a message.
What the technique sounds like
To show how it works, I deliberately come up with a question I would have no business answering. Something like: "Jess, tell me how the stock price of this other company did in 2001, between August and September."
I do not have that number. So my answer sounds like this: "While I don't have the stats for that stock price during that time, what I can tell you is that between 2000 and 2005, what we saw was..." and then I go to something I actually know.
Notice what happened. I admitted the gap in half a sentence, I did not apologize for it, and I spent the rest of the answer on solid ground.
It also works for questions outside your lane
The same move handles questions you could answer but should not. Political questions are the classic example. If a reporter asks me about politics, I might say: "Look, I don't know about the politics, but I can tell you from a communication perspective what those politicians should have done is..."
That answer is honest, it keeps me out of a fight I have no reason to join, and it puts me right back on my expertise. If you want more on handling questions that wander away from your talking points, see what to do with a question that is not on your message map.
How to use the I Don't Know Technique
1. Admit the gap briefly
One clause is enough: "While I don't have those numbers in front of me" or "I don't know the details of that." No apology, no explanation of why you do not know.
2. Pivot with a clear connector
Use a phrase that signals the turn: "what I can tell you is" or "but I can tell you from my perspective." The connector is what turns a dead end into an answer.
3. Land on something you do know
Go to a related fact, a broader trend, or your own area of expertise. Ideally, go to one of your key messages.
4. Rehearse it before the interview
Write down the three or four questions you are most afraid of not knowing, and practice the first sentence of each answer out loud. The words come out far more naturally when you have said them before.
The technique fails when the pivot lands somewhere unrelated. "I don't know, but let me tell you about our new product" sounds like a dodge. Stay in the neighborhood of the question, then move toward your message.
Practice the hard questions before a reporter asks them
The I Don't Know Technique is one tool in a larger system for answering tough media interview questions. It works best when you have rehearsed it under pressure, with someone playing the reporter and the camera rolling. If you have an interview coming up and want to walk in ready for the questions you cannot answer, get a quick quote for media training.