The Prime Minister of the Democratic Socialist Republic of Sri Lanka (Sinhala: ශ්රී ලංකා අග්රාමාත්ය Śrī Laṃkā agrāmāthya; Tamil: இலங்கை பிரதமர்) is the most senior member of parliament in the cabinet of ministers in Sri Lanka. They are in charge for their policies and actions to parliament. The President is both head of state and head of government in Sri Lanka. Since 1978, most prime ministers have served as mere deputies to the executive presidency, while at times served as the de-facto head of government.