Wejibuug, sida caanka ah loo yaqaano Facebook waa shirkad weyn oo ka howlgasha bar-internet iyo bar bulsho u adeegta bulsho badan oo ku dhaqan meelo badan oo caalamka ah. Shirkada Wejibuug waxaa xarunteeda ugu sareeysa ku taalaa Menlo Park, kalifornia. Shirkadani waxaa la aasaasay Febraayo 4, 2004, waxaana fikrada iska lahaa dhowr dhalinyaro ah oo ka mid yahay Mark Zuckerberg, Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, iyo Chris Hughes.