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Which of the following is correct?

  1. Yesterday, I met one of my friends.
  2. Yesterday, I met one of my friend.
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closed as off-topic by Edwin Ashworth, Nathaniel, Jim, choster, Mari-Lou A Dec 14 '15 at 7:52

This question appears to be off-topic. The users who voted to close gave this specific reason:

If this question can be reworded to fit the rules in the help center, please edit the question.

If I have only one friend, then I can say: Yesterday I met my one friend. – GEdgar Jul 2 '11 at 13:43
up vote 19 down vote accepted

It's "one of my friends". The other option would be ungrammatical.

To spice it up a little, here are the stats from the Corpus of Contemporary American English and the British National Corpus:

                     COCA    BNC
one of my friends     251     40
one of my friend        0      0
one of your friends    58      6
one of your friend      0      0
one of our friends     40      7
one of our friend       0      0
one of his friends    182     60
one of his friend       0      0
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+1 for the "spice it up" idea. :D – Alenanno Jul 2 '11 at 9:33
Then again, if you only have one friend and a bent for self-deprecating humour... – bye Jul 2 '11 at 11:28
"One of my friend" sounds like something a non-native English speaker would say, or something from a very uncommon dialect. It certainly grates against my ears. – Vincent McNabb Jul 2 '11 at 12:28
@VincentMcNabb That's what I used to think too until I heard Australians use it. – moonstar2001 Sep 21 '14 at 17:40

It would rather be "one of my friends".

Depending on the situation, you may want to use "a friend of mine":

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@DCShannon: I edited the answer for further explanation, see above. – Mathieu Rodic May 5 '15 at 7:14
Okay, I rescinded my downvote. There's still not much reason to use your alternate phrasing, but it doesn't hurt to have alternatives. – DCShannon May 5 '15 at 18:34

Think of it this way: If you didn't have several friends, you wouldn't need to be specifying that you only met one friend. "One of" is indicating a particular member out of a set with multiple members in it, so it's correct to use the plural form: "One of my friends." If you only have one friend total, then you can just say "Yesterday, I met my friend."

Similarly, when you turn it around thus:

One of my friends is meeting me later

then it's correct to use the singular verb form, because you're still only talking about one person. (Many people get confused because "friends", plural, is right next to the verb "is", but "One" is the true subject of the sentence.)

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With the possible exception of set phrases, when you say one of [noun], [noun] is used in the plural form.

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protected by Mitch Sep 21 '14 at 20:20

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