Yeh, we have Anime Friends, the biggest con of Brazil, in July. ( http://www.anifriends.com.br
) It will be 10, 11, 12, 16, 17, 18 and 19 July, but I must tell you, 17, 18 and 19 ares the best days.
There's the Animecon too, 25 and 26 July ( http://www.animecon.com.br
) Its a nice con too.
Both cons are in São Paulo, SP. You can find the adress on the sites (: