Apple (AAPL -0.35%) needs little introduction.

The iPhone maker has built an unrivaled consumer tech ecosystem, selling high-priced devices and related high-margin services like the App Store and Apple Pay. Its business model and reputation for quality products have allowed Apple to generate enormous profits and made it the most valuable company in the world, with a market cap today of about $2.9 trillion. With modest growth, the company could be worth $5 trillion by 2030.

However, just because Apple is the most valuable company in the world today doesn't mean it will always be. Just ask ExxonMobil, General Electric, and IBM, all of which have fallen sharply from their earlier positions as the most valuable companies in the country.

While Apple still appears to be in great shape, a number of companies have the potential to move past it by 2030. Let's take a look at three of them.

A stock chart going up.

Image source: Getty Images.

1. Microsoft

Of all the companies that could top Apple in market cap by 2030, Microsoft (MSFT 1.82%) has the best chance of doing so. In fact, it's already knocking on the door with a market cap of $2.76 trillion, just 5% smaller than Apple.

But that's not the only reason why Microsoft could reclaim the title of the world's most valuable company. It is on the cutting edge of the artificial intelligence (AI) business thanks to its partnership with OpenAI, and it's in the process of incorporating generative AI technologies across its portfolio of products, including its Azure cloud infrastructure business, Office software suite, and Bing search engine.

Microsoft Azure is also growing faster than rivals like Amazon Web Services, and the company has a history of making smart acquisitions under CEO Satya Nadella, including Linkedin, GitHub, and Activision Blizzard.

Finally, Microsoft is more diversified than Apple and its fellow tech giants, making it more resistant to recessions and better able to adapt to changing circumstances.

2. Nvidia

Nvidia (NVDA 6.18%) was the breakout star of 2023. The company's AI chips have been in high demand as cloud infrastructure companies, start-ups, and other tech companies look to build out their capacity to run complex generative AI models.

Nvidia's revenue tripled year over year in the third quarter, and it has built out a commanding lead in artificial intelligence (AI) chips and components. In fact, there's a shortage of the kind of graphics processing units (GPUs) and accelerators that Nvidia produces.

Demand for generative AI components and infrastructure seems set to explode as many tech CEOs expect generative AI to be revolutionary, and that could fuel Nvidia's growth over the coming years.

Currently, the company enjoys a large competitive advantage in AI chips with a profit margin above 50%, which could enable the company to grow from $1 trillion to $5 trillion by 2030, potentially topping Apple by then.

3. Tesla

Finally, Tesla (TSLA -1.11%) has a chance to exceed Apple's market cap in the next six years.

It has already disrupted the auto sector once by proving that electric vehicles (EVs) can be a profitable business, and it essentially took the concept mainstream. Now, it has a chance of disrupting the sector again with autonomous vehicle technology and robotaxis. Tesla bulls like Ark Invest's Cathie Wood expect the company to deploy a fleet of robotaxis in the coming years, and predict that autonomous vehicles will eventually produce the majority of its revenue.

That could still be several years away, but Tesla's track record and its commitment to innovation in areas like its autonomous robot, Optimus, give the stock significant upside potential. For Tesla to reach $5 trillion in market cap, it would have to grow roughly six times larger, but that's as much as investors such as Wood expect it to appreciate.

If Tesla can pull off the pivot to autonomous vehicles, its stock could skyrocket from here. While that may seem impossible, Tesla has shown its ability to overcome long odds in the past, and it could do it again.