With increasing competition in the educational sector, higher education institutions are striving to become research centers where besides the traditional functions of education and science, knowledge is transferred to practical areas of the economy and society as a whole, responding to their needs. Ural Federal University focuses on project-based learning. The paper provides a rationale for the need to create a system of project activities based on interdisciplinary integration. The methodology of organizing interdisciplinary projects in a foreign language refers to the provisions of competence-based education and personality-based active learning approach. The described system of interdisciplinary projects is based on the classification of the project method in terms of project participants, implementation period, principles of interaction, ways of coordination, and basic methods of implementation. The study introduces interdisciplinary projects for teaching a foreign language as a set of educational and cognitive techniques and actions of students in various fields of knowledge, which, in turn, allow students to organize independent work using authentic sources in their professional field and involve the presentation of their findings in a foreign language. The paper describes a model of a phased system of the project work organization among students, which starts with the team-work on the project in the selected area in the freshman class as an option of the extracurricular activity, and ends with the independent implementation of the interdisciplinary project within the curriculum in the graduating class.