The provisional president of the Senate of the Argentine Nation (Spanish: Presidente provisional del Senado de la Nación Argentina), commonly known as the provisional president, is the highest-ranking official in the Argentine Senate, the upper chamber of the National Congress of Argentina barring the presence of the titular president of the Senate, the vice president of Argentina.

The provisional president of the Senate is second in the line of succession to the presidency in Argentina. At the outset of each legislative year, which per governing statutes takes place during the first ten days of December, the members of the Senate elects the provisional president. Minority parties in the chamber elect three vice presidents.^[2]