While crisis is part of the organisation and the organisational life which are in continuous interaction with the environment, crisis should not be allowed to have destructive effects on the organisation. Because it does not seem possible that all crises could be avoided, it should be possible that they are to be controlled at an optimum level and to cope with them with effective public relations policies without making serious harm to the organisation. The basic public relations functions like collecting information, informing, forming and preserving the corporate image, communicating with audiences, to line up the corporate performance with the expectations of target audiences, to evaluate the results; all are demonstrating their importance during crisis periods too. Crisis management which comes into force with the aim to cope with undesirable but probable events and conditions, needs the public relations because it is a management function and because of the significance that communication bears. Public relations is crucial for an organisation. Preparing for possible crisis environments; in the event of a crisis, acting in the name of the organisation for overcoming the crisis with the least damage possible or to transform the effects of the crisis into a positive opportunity and to aim a position better than before the crisis, all these can only be achieved by public relations.