በኢትዮጵያ ክልሎች ትልቁን ድንበር የሚጋሩት ኦሮሚያ እና ሶማሊ ክልሎች ናቸው።
The longest border in Ethiopia is shared between Oromia and Ethiopian Somali region, which are respectively the country's first and second largest administrative regions by area.