Zuid-Holland Oost (literally East South Holland) is an official region of the province of South Holland in the Netherlands. The region consists of the following subregions: * Alblasserwaard-Vijfheerenlanden, municipalities: Giessenlanden, Gorinchem, Hardinxveld-Giessendam, Leerdam, Molenwaard, and Zederik * Gouwestreek, municipalities: Bodegraven-Reeuwijk, Gouda, Waddinxveen, Zuidplas, and Boskoop (former municipality) * Krimpenerwaard (region), municipality: Krimpenerwaard * Rijnstreek, municipalities: Alphen aan den Rijn (incl. Rijnwoude), Nieuwkoop, and Jacobswoude (former municipality)