A semi-presidential system is a system of government in which a president exists along with a prime minister and a cabinet, with the latter two being responsible to the legislature of a state. It differs from a parliamentary republic in that it has a popularly elected head of state, who is more than a purely ceremonial figurehead, and from the presidential system in that the cabinet, although named by the president, is responsible to the legislature, which may force the cabinet to resign through a motion of no confidence.

Ein semipräsidentielles Regierungssystem (oder: gemischt präsidial-parlamentarisches Regierungssystem) weist sowohl Elemente des Parlamentarismus als auch des Präsidialsystems auf.