Yambol (, oblast Yambol, former name Yambol okrug) is a province in southeastern Bulgaria, neighbouring Turkey to the south. It is named after its main city Yambol, while other towns include Straldzha, Bolyarovo and Elhovo. The province embraces a territory of 3,355.5 km² that is divided into 5 municipalities with a total population, as of December 2009, of 138,429 inhabitants.