Growth investing is a style of investment strategy focused on capital appreciation. Those who follow this style, known as growth investors, invest in companies that exhibit signs of above-average growth, even if the share price appears expensive in terms of metrics such as price-to-earnings or price-to-book ratios. In typical usage, the term "growth investing" contrasts with the strategy known as value investing.

However, some notable investors such as Warren Buffett have stated that there is no theoretical difference between the concepts of value and growth ("Growth and Value Investing are joined at the hip"), as growth is always a component in the calculation of value, constituting a variable whose importance can range from negligible to enormous and whose impact can be negative as well as positive. Buffett has recognized the influence of his business partner Charlie Munger on this view, which is best expressed by the famous Buffett saying "It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price".

Thomas Rowe Price, Jr. has been called "the father of growth investing" because of his work defining and promoting growth investing through his company T. Rowe Price, which he founded in 1937 and is now a publicly traded multinational investment firm.

Also influential in shaping this investment style was Phil Fisher, whose 1958 book "Common Stocks and Uncommon Profits" is still today a reference for identifying growth companies.