Divisional secretariats of Sri Lanka

The districts of Sri Lanka are further divided into administrative sub-units known as divisional secretariats (Sinhala: ප්‍රාදේශීය ලේකම් කොට්ඨාස, romanized: Prādēśīya lēkam koṭṭhāsa ; Tamil: பிரதேச செயலகங்கள், romanized: Piratēca ceyalakaṅkaḷ). They were originally based on the feudal counties, the korales and ratas. Divisional secretariats are the third-level administrative divisions of the country and there are currently 331 divisional secretariats in Sri Lanka.

They were formerly known as D.R.O. divisions, after the divisional revenue officer. Later the D.R.O.s became assistant government agents and the divisions were known as A.G.A. divisions. Currently, the divisions are administered by a divisional secretary, and are known as D.S. divisions.