From Longman Dictionary of Contemporary Englishhave heard of somebody/somethinghave heard of somebody/somethingKNOW somebodyto know that someone or something exists because they have been mentioned to you before ‘Do you know Jill Marshall?’ ‘No, I’ve never heard of her.’ → hear
Examples from the Corpus
have heard of somebody/something• I've heard of Louis de Bernieres, but I've never read anything by him.• Have you ever heard of a band called Big Star?• The entire universe will have heard of her by then.• It would be incongruous to see her as an influence on later writers who may never have heard of her.• You may have heard of his kid brother.• For the moment, none of them seems to have heard of it.• From old Boston, in case you might have heard of it.• I have heard of levels, of course.• There has been so much talk of saturated and unsaturated fats that most people have heard of them.• She claimed never to have heard of Suzuki-san. 