Pierre-Eustache Daniel Fignolé (French pronunciation: [pjɛʁ østaʃ danjɛl fiɲɔle]; November 11, 1913 – August 27, 1986) was a Haitian politician who became Haiti's provisional head of state for three weeks in 1957.

He was one of the most influential leaders in the pre-Duvalier era, a liberal labor organizer in Port-au-Prince so popular among urban workers that he could call upon them at a moment's notice to hold mass protests, known as "woulo konpresè"—Haitian Creole for "steamroller."

Then president Élie Lescot responded to harsh critiques by closing the paper, firing Fignolé from his government teaching position, and placing him under police surveillance.

He continued his political activity, quickly becoming known among Port-au-Prince's poor working class as 'le professeur' or as in English, "the professor" for his impassioned orations, writing, and leadership of labor strikes.

Although Fignolé promised a Franklin D. Roosevelt-style New Deal and was explicitly anti-communist, his politics had long made him suspicious in the eyes of the Cold War-era American administrations.

United States Central Intelligence Agency (CIA) director Allen Dulles warned President Dwight D. Eisenhower that Fignolé had "a strong leftist orientation".

Eisenhower told the French Embassy in Washington, D.C. that he was worried that Fignolé "might eventually become another Arbenz", referring to the social-democratic President of Guatemala overthrown three years earlier in a CIA-backed coup d'état.