The Marshal of the Senate of the Republic of Poland (Polish: Marszałek Senatu Rzeczypospolitej Polskiej) is the presiding officer of the Senate of Poland.

The marshal is also third person according to the Polish order of precedence, after President of the Republic of Poland and Sejm Marshal, and second in line to become Acting President of the Republic of Poland (after Sejm Marshal; in period 1935-1939 Senate Marshal was the first).

The person who functions as their second-in-command is the Deputy Marshal of the Senate of the Republic of Poland.

In the Polish–Lithuanian Commonwealth, the role was performed by the Grand Crown Marshals.

The office was interrupted by German invasion of Poland in 1939 and not reinstated in People's Republic of Poland.