Don Mariano Jesús Cuenco y Diosómito was a Filipino politician and writer from Cebu. He was the 4th President of the Senate of the Philippines.

The president of the Senate of the Philippines, commonly referred to as the Senate president, is the presiding officer and the highest-ranking official of the Senate of the Philippines, and third highest and most powerful official in the government of the Philippines. They are elected by the entire body to be their leader. The Senate president is second in the line of succession to the presidency, behind only the vice president and ahead of the speaker of the House of Representatives.