Does a list of used hashtags exist?

I mean: if I want to "create" a new meaning for a hashtag how can I search if anyone has used it before?

  • 1
    Why can't you just use Twitter search? If someone has used the hashtag it'll come up.
    – ale
    Commented Mar 7, 2015 at 13:39

2 Answers 2


You can search for #tagname. You can also navigate to https://twitter.com/hashtag/{tagname}. For example, going to https://twitter.com/hashtag/jmm2010 tells me the tag was used by someone in 2009.


You could use Twitter search as suggested in another answer, but I found a Twitter directory wherein you can also search hashtags:


I also think that knowing who tweeted the hashtag first could also help you verify if it has been used. However, currently the site is down because it hasn't adapted yet to Twitter's new API.

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