To be aware that someone or something exists, without necessarily having detailed knowledge about them.
To have heard of someone or something, even if you don't know them well.
2 meanings, ordered from most common to least. Color-coded by CEFR level.
To be aware of the existence of someone or something, though not necessarily with full or detailed knowledge.
"I know of a good restaurant near the station, but I've never been there myself."
I know of no way to judge the future but by the past.
— Patrick Henry, speech to the Virginia Convention, 1775
(In negative statements) To have no information or evidence about something.
"I know of no reason why the project should be delayed."
Often used in the negative ('I know of no reason') or in polite formal contexts. The distinction between 'know of' and 'know about' is important: 'I know of him' (I've heard his name) vs. 'I know about him' (I have information about his life/work).
Natural word combinations native speakers use most often.
The five tense forms you'll use most often.
Listen to native speakers using "know of" in real YouTube videos — click a clip to watch it on Looplines.
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