Camarines Sur's 3rd congressional district is one of the five congressional districts of the Philippines in the province of Camarines Sur. It has been represented in the House of Representatives since 1987. The district consists of the provincial capital Pili, its largest city Naga, and adjacent municipalities of Bombon, Calabanga, Camaligan, Canaman, Magarao and Ocampo. It is currently represented in the 20th Congress by Nelson Legacion of the Lakas-CMD.