Я часто думаю о них.

I

Breakdown of Я часто думаю о них.

• часто: often
• о: about
• думать: to think

Questions & Answers about Я часто думаю о них.

Why is it о них and not про них?

Both о and про can mean about, but they are used a bit differently.

• о них is more neutral and slightly more formal. It’s the default, especially in:

  • careful speech
  • writing
  • more serious topics
    Example idea: I often think about them (seriously / in general).

• про них is more colloquial and often feels a bit more casual or chatty.
  Example idea: I often think about them (like I keep them in mind / they’re on my mind in everyday life).

In your sentence, Я часто думаю о них is the standard, neutral way to say it. Я часто думаю про них is also possible in many contexts and doesn’t sound wrong, just more conversational.

---

Why is it них and not их after о?