Triangulation is an approach to research. There are five types of triangulation utilized in nursing research: data, methodological, theoretical, researcher and analysis triangulation. In this article each type of triangulation will be discussed. The purpose of utilizing triangulation is to enhance confirmation and completeness of the study. However, triangulation needs to be chosen deliberately, for the correct reasons and rationale. Careful planning is important. Inappropriate use of triangulation will not only increase confusion but also may lead to inaccurate results。