While small businesses have a significant role in today''s economies on the whole, the prospects of the individual small companies are uncertain. Many young companies go bankrupt in the first year of their operation, and the life of many companies is a constant struggle to survive. This is why dynamically growing companies that are able to show a constant high growth and gain a significant profit for their owners receive special attention. The social role of fast-growing companies is at least as important as their economic significance, because they act as a pulling force: they show an example to other companies, and encourage them to grow, thus they operate as the motor of the economy. In this book the following the review of the international literature on the topic, characteristics and development possibilities of Hungarian fast-growing SMEs is introduced.