Topic of this paper is food poisoning on cruisers. There are many types of passenger ships, and one of them are cruisers or cruise ships. This type of ship is becoming more common form of transportation and travel for many tourists, and that is not surprising given that cruisers offer many ways of having fun and variety of activities during voyage. Because of large number of people (several thousands) in limited space and relatively close contact on cruisers are respiratory/droplet infections (COVID-19, flu) and food poisoning very likely danger and represent not only an epidemiological and public health problem but also a possible financial damage to the company/owner. Food poisoning can be from several different sources and have different causes which will also be seen in this paper. The paper also analyzes the types of poisoning and the causes of certain poisonings such as salmonellosis, staphylococcal poisoning and similar. Although cruisers and big passenger ships have doctors, deck officers must know basic causes and transmission pathways, things about food hygiene and proper food handling.