Investing in the world's most successful companies doesn't have to mean opening a US brokerage account or buying dozens of individual international shares. Thanks to ASX exchange-traded funds (ETFs), you can get diversified global exposure in a single trade.

Here are three ETFs that provide instant access to some of the biggest and best businesses across the globe.

Betashares Global Quality Leaders ETF (ASX: QLTY)

The Betashares Global Quality Leaders ETF provides exposure to 150 of the world's highest-quality companies across global markets. The popular ASX ETF targets businesses with strong balance sheets, high return on equity, and a track record of earnings stability. These are traits that can help deliver resilient performance over time.

Its holdings currently include the likes of Microsoft (NASDAQ: MSFT), Apple (NASDAQ: AAPL), Adobe (NASDAQ: ADBE), and locally listed ResMed Inc. (ASX: RMD), along with other leaders in technology, healthcare, and consumer goods. For Australian investors, the Betashares Global Quality Leaders ETF offers an easy way to access a diversified portfolio of global blue chips with a quality-first focus.

This ASX ETF was recently named as one to consider buying by the team at Betashares.

Betashares Nasdaq 100 ETF (ASX: NDQ)

Another ASX ETF to look at is the Betashares Nasdaq 100 ETF. It gives you access to 100 of the largest non-financial companies listed on the Nasdaq stock exchange in the United States. This means instant exposure to some of the most innovative and fastest-growing businesses in the world, including NVIDIA (NASDAQ: NVDA), Amazon (NASDAQ: AMZN), Netflix (NASDAQ: NFLX), and Meta Platforms (NASDAQ: META).

While tech companies dominate the index, the fund also includes leaders in consumer goods, healthcare, and communications. Over the past decade, the Nasdaq 100 has delivered impressive long-term returns. And with its outlook appearing very positive, it would not be a surprise if it did this all again over the next decade.

VanEck Morningstar Wide Moat ETF (ASX: MOAT)

Finally, there's the VanEck Morningstar Wide Moat ETF to consider. It takes a different approach by investing in fairly valued US stocks that have a durable competitive advantage, or wide moat. This means these businesses are better placed to fend off competition and deliver sustained profitability.

Current holdings include companies like Alphabet (NASDAQ: GOOGL), Boeing (NYSE: BA), Nike (NYSE: NKE) and Applied Materials (NASDAQ: AMAT). For investors looking for a more selective global ETF focused on quality, the VanEck Morningstar Wide Moat ETF offers a unique strategy with the potential for long-term outperformance.