This list http://www.bitcoinrichlist.com/top100 proves that there are less than 500 wallets that contains more than 1000 bitcoins. I bet these people are those who have invested in bitcoins from the start. They believed in bitcoin so now they are millionaires. But personally, I do not know someone or heard of someone who owns 1000 Bitcoins. Maybe there's someone in my area who has that much but don't wanna tell other people about it to prevent someone from hacking his/her account.

no,but I remember the times when 1 bitcoin give on faucets for free 3-5 years ago

I know some users with large pockets, but 1000 BTC ~ 700.000 dollar. No not of that kind of proportion. It's close to a million. Having so much money into bitcoin makes you either a real believer or someone who likes risk. A lot of risk, because it things go wrong, he/she will lose a lot of money.. and with that I mean lot's of money.

Suppose the price goes back to 350 dollar. Such a person would have lost 350k. BAM gone!

I know someone who owns that much of bitcoin. He used to be kind to others and easy to chat with when he didn't know bitcoin. Since he started earning so many bitcoin at once well he's still good but he's not that kind compared to what he used to be. Now he isn't easy to talk with because in a chat he always trashtalk even if he/she is not offended and even if he offends others he don't care not like he used to be kind and easy to talk to. Well I guess owning so much bitcoin sometimes changes personality.

Exactly if someone would be holding that high amount then he will prefer to keep it secret and will divide it into multiple wallets to minimize risks.

1000 BTC x 670 $ = 670 000 $. That is a lot of money, and personally I don't know anyone who have so much money, with bitcoins or with fiat. I agree with some people that someone who have so many coins, he would not go around and talk about it. He will instantly become target to some hackers, they just wait to catch someone with that amount of money.
But probably its not so simple with hacking this amount of coins, someone use some good wallet, and probably coins are offline.

Satoshi Nakamoto is a bitcoin millionaire acording to the rumors.

He owns 1000 times more than 1000 bitcoins, i guess.

To answer your question-No, i don`t know anyone that owns 1000 btc.

yeah though the problem is that we dont know if the creator of bitcoin is still alive, also in my opinion there are more people who have that much bitcoins i just dont know them

Yeah no one wants to risk their money by declaring that they hold such a huge number of  coins and I don't think that anyone would be holding that huge  amount of  coins.