National identity is a complex and multi-component phenomenon that can be considered in the context of different approaches and methodologies. This article focuses on the constructivist approach to the interpretation of identity and critical discourse analysis as its direction. This article outlines different approaches to defining the dimensions of identity, in particular, M. Hibernau's approach, which identifies psychological, cultural, territorial, historical, and political dimensions, and L. Uhryn's approach, which identifies continuity, uniqueness, contextuality, dynamism, and structure as key dimensions of identity. The phenomenon of identification is also described as a process part of the micro-level of identity based on the statement that national identity is a product of discourse. The core in this context is the definition of thematic discourses, on the basis of which the process of internalization of identity takes place, namely: the search for common and different when a person compares himself with the image offered by the identity discourse.The author's approach to delineating the dimensions of national identity is proposed. A brief description and examples for each dimension are provided. In particular, the psychological, behavioral, cultural, historical, esoteric, geographical, worldview, spatial, temporal, political, social, sociological, interactional, teleological, strategic, tactical, essential, formal-normative, personified-scenario, value, civilizational and ideological dimensions are defined national identity. These dimensions can be the thematic basis of the discursive construction of national identity because discursive strategies can be compilated in them for their effective implementation. From them also follows the distinction between discursive practices carried out within these strategies and outside them. The key role of the proposed dimensions in the process of discursive construction of national identity is to provide sufficient explanatory potential to the formed system of discursive strategies and practices.