From the context in which I read "OP" in comments and answers, I understand that it refers to the person who asked the question, but I can't find any reference to the meaning of those letters, nor can imagine it.

  • 7
    Original Poster (no need to delete this I think it's a great question)
    – percusse
    Commented Dec 4, 2012 at 16:47
  • 4
    Urban Dictionary is often a good place for finding the meaning of such abbreviations. Commented Dec 4, 2012 at 17:27
  • Kept me thinking for a while too, when I first saw it.
    – Count Zero
    Commented Dec 4, 2012 at 18:05
  • I use Acronym Finder which tends to lists most of the definitions associated with an abbreviation.
    – mythealias
    Commented Dec 5, 2012 at 15:39

2 Answers 2


It means 'Original Poster', and is pretty common in for example Usenet (where you have a thread starting potentially with an anonymous question).

For a complete list of Stack Exchange terms, see Stack Exchange Glossary - Dictionary of Commonly-Used Terms.

  • Thanks for the glossary link too!
    – JLDiaz
    Commented Dec 5, 2012 at 10:18

In addition to "original poster," it is also sometimes used to mean "original post," with the assumption that you can tell which is meant based on the context.

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