Bezos claims that boosting the population dramatically would also significantly increase the number of geniuses.
He was making his ambitious vision during a speech about Blue Origin, his futuristic space transport company.
Bezos said: “The solar system can support a trillion humans, and then we’d have 1,000 Mozarts and 1,000 Einsteins.
“Think how incredible and dynamic that civilisation will be.”
Bezos, who has a £103billion fortune, says humans can’t drag their feet over the plans claiming that “we don’t have forever”.
Speaking at New York’s Yale Club he reportedly said that Blue Origin was working on a “low cost, highly operable reusable launch vehicle”.
He continued: “I really want that dynamic life and civilisation for our grandchildren’s grandchildren. But we’ve got to get started.”
Bezos began Amazon 24 years ago by driving packages to post offices and last year it was valued at more than $1trillion.
He says he is inspired by Facebook’s Mark Zuckerberg who showed what is possible with imagination.
Bezos said: “Here’s a guy who literally, in his dorm room, started a company – Mark Zuckerberg started a company in his dorm room which is now worth half a trillion dollars – less than two decades ago.
“How do you get that kind of entrepreneurial (progress) in space? You need to lower the price of admission right now to do anything interesting in space because it requires so much heavy lifting and so much infrastructure development.
“The entry price point for doing interesting things is hundreds of millions of dollars. Nobody is going to do that in their dorm room. You can’t have a Mark Zuckerberg of space today.
“It’s impossible. Two kids in their dorm room can’t start anything important in space today.
“I want to take the assets that I have from Amazon and translate that into the heavy-lifting infrastructure that will (help) the next generation to have dynamic entrepreneurialism in space – kind of build that transportation network.
“That’s what’s going on, that’s what Blue Origin’s mission is. If we can do that, then the whole thing will take off and there will be thousands of companies doing creative things.”
Blue Origin is aiming to make it significantly cheaper to get into space, developing technology for launches into space.
Rivals SpaceX, led by Tesla’s Elon Musk, have hit the headlines and also work with NASA on missions.