The paper carries an analysis of regionalism in Pakistan, its origin, its reasons, and its impediments to the national security of the country, through the linguistic lens. The paper in its analytical findings reveals that several factors are responsible for regionalism in Pakistan leading to some serious impediments to the national security of the country. Short-term, medium-term, and long-term solutions are recommended for the solution to this problem and therefore, the paper concludes that the need of the hour for the country’s leadership is to rise above self/vested interests, unite the nation, and respond to the challenge of regionalism.