Buy and hold investing can be a great way to build wealth over the long term.
But if you're not a fan of stock picking, then it can all become too hard.
The good news is that ASX exchange traded funds (ETFs) are here to save the day.
They allow investors to buy large groups of shares in one fell swoop, removing the need to pick individual stocks.
But which ASX ETFs could be great buy and hold picks? Let's look at five that could be worth considering for the next two decades.

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iShares S&P 500 ETF (ASX: IVV)
The first ASX ETF to consider is the iShares S&P 500 ETF. It gives investors exposure to 500 of the largest listed companies in the United States.
That includes businesses involved in technology, healthcare, financial services, consumer products, industrials, and other industries. Holdings include Apple (NASDAQ: AAPL), Nvidia (NASDAQ: NVDA), and ExxonMobil (NYSE: XOM).
What makes this ETF attractive over a 20-year period is the quality of the companies it holds. Many have strong competitive positions, enormous financial resources, and the ability to keep investing in new products, technologies, and markets.
That could make the iShares S&P 500 ETF a strong option for Australian investors wanting long-term exposure to some of the world's most successful businesses.
Betashares Nasdaq 100 ETF (ASX: NDQ)
Another ASX ETF that could be worth buying and holding is the Betashares Nasdaq 100 ETF.
This hugely popular fund provides exposure to 100 of the largest non-financial companies listed on the Nasdaq exchange.
Many of these businesses are involved in areas such as artificial intelligence, cloud computing, software, semiconductors, ecommerce, and digital advertising.
Over the next two decades, these businesses could benefit from continued technological change across the global economy.
Betashares Asia Technology Tigers ETF (ASX: ASIA)
The Betashares Asia Technology Tigers ETF could also be worth considering.
It invests in leading Asian technology companies, giving investors exposure to businesses involved in semiconductors, ecommerce, gaming, hardware, and digital platforms.
Asia is home to some of the world's most important technology manufacturers and enormous consumer markets.
As the region's economies develop and technology adoption continues, its leading companies could have significant opportunities to grow.
Betashares Global Cybersecurity ETF (ASX: HACK)
A fourth ASX ETF to consider for the next 20 years is the Betashares Global Cybersecurity ETF.
This fund invests in companies providing cybersecurity products and services.
These businesses help protect networks, cloud systems, devices, data, payments, and digital identities.
As more businesses adopt artificial intelligence, cloud computing, and connected technologies, keeping systems secure is likely to become increasingly important.
This bodes well for the companies held by this fund.
VanEck Morningstar Wide Moat ETF (ASX: MOAT)
Finally, the VanEck Morningstar Wide Moat ETF could be a strong buy and hold option.
This fund focuses on US companies that have sustainable competitive advantages and are trading at attractive valuations.
These advantages can include strong brands, intellectual property, cost advantages, and customers that are difficult to lose.
This is a philosophy that has helped investors such as Warren Buffett build enormous wealth over time.
Over a 20-year period, owning quality businesses with the ability to protect their profits and compound earnings could be a very sensible approach.