Miguel Díaz-Canel Bermúdez is a Cuban politician and engineer who is the 3rd and current First Secretary of the Communist Party of Cuba. As First Secretary, he is the most powerful person in the Cuban government. Díaz-Canel succeeds the brothers Fidel and Raúl Castro, making him the first non-Castro leader of Cuba since the revolution.

The First Secretary of the Central Committee of the Communist Party of Cuba is the top leader of Cuba. The First Secretary is the highest office within the Communist Party of Cuba as well as ranking first in the Politburo, the highest decision-making body in Cuba, which makes the office holder the most powerful person in the Cuban government. In communist states the First or General Secretary of the Communist Party is typically the de facto leader of the country and a more powerful position than state offices such as President or Prime Minister, when those positions are held by different individuals.