Investing in mutual funds for retirement is never too late. And the Zacks Mutual Fund Rank can be an excellent tool for investors looking to invest in the best funds.

The easiest way to judge a mutual fund's quality over time is by analyzing its performance, diversification, and fees. Using the Zacks Mutual Fund Rank of over 19,000 mutual funds, we've identified three outstanding mutual funds that are ideally suited to help long-term investors pursue and achieve their retirement investing goals.

Here are the funds that have achieved the Zacks Mutual Fund Rank #1 (Strong Buy) and have low fees.

If you are looking to diversify your portfolio, consider Voya Growth & Income Portfolio I (IIVGX Quick QuoteIIVGX - Free Report) . IIVGX is a Large Cap Blend fund, targeting companies with market caps of over $10 billion. These funds offer investors a stability, and are perfect for people with a "buy and hold" mindset. This fund is a winner, boasting an expense ratio of 0.67%, management fee of 0.6%, and a five-year annualized return track record of 11.96%.

Fidelity Select Semiconductors (FSELX Quick QuoteFSELX - Free Report) . Expense ratio: 0.69%. Management fee: 0.53%. FSELX is part of the Sector - Tech mutual fund category that invests in technology and lets investors own a stake in a notoriously volatile sector, but with a much more diversified approach. This fund has managed to produce a robust 27.18% over the last five years.

MFS Mass Investors Growth Stock R1 (MIGMX Quick QuoteMIGMX - Free Report) . Expense ratio: 1.46%. Management fee: 0.33%. Five year annual return: 11.67%. MIGMX is a part of the Large Cap Growth mutual fund category, which invest in many large U.S. companies that are expected to grow much faster compared to other large-cap stocks.

There you have it. If your financial advisor had you put your money into any of our top-ranked funds, then they've got you covered. If not, you may need to talk.