In today's society no company, economic agent or individual is immune to the impact of a crisis. Crises have become part of our everyday lives. This thesis is trying to see into how efficient communication during crisis can become key for successful overcoming crisis situation. Furthermore, this work gives insight into different types of crises, crisis management processes, most common mistakes, importance of social networks and the general situation in Croatia, with special emphasis on communication. Many companies become aware of the communication importance once they find themselves in crisis situation and, in most cases, then it is already too late. The aim of this thesis is to show importance of internal and external communication in crisis situations trough theory and several practical examples. Cases shown in analysis include national recall od Maggi noodles in India, Germanwings airplane crash, Mini Poli sausages found to contain forbidden levels od GMO substances, leak of carbon dioxide from Karlovaĉka pivovara /Karlovac Brewery/ and HŢ /Croatian railways/ train derailment in Rudine village. The results have shown that lesser consequences have suffered those companies that used crisis communication efficiently and prudently, despite the enormous differences concerning field of industry and the specific situations.