speaker, talker, verbaliser, verbalizer, utterer - someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous); "the speaker at commencement"; "an utterer of useful maxims"

swayer, ruler - a person who rules or commands; "swayer of the universe"

shogun - a hereditary military dictator of Japan; the shoguns ruled Japan until the revolution of 1867-68

strongman - a powerful political figure who rules by the exercise of force or violencea; "he is determined to bring down the Iraqi strongman"

autocrat, despot, tyrant - a cruel and oppressive dictator

Francois Duvalier, Papa Doc, Duvalier - oppressive Haitian dictator (1907-1971)

Baby Doc, Duvalier, Jean-Claude Duvalier - son and successor of Francois Duvalier as president of Haiti; he was overthrown by a mass uprising in 1986 (born in 1951)

El Caudillo, Francisco Franco, Franco - Spanish general whose armies took control of Spain in 1939 and who ruled as a dictator until his death (1892-1975)

Adolf Hitler, Der Fuhrer, Hitler - German Nazi dictator during World War II (1889-1945)

Benito Mussolini, Il Duce, Mussolini - Italian fascist dictator (1883-1945)

Tojo, Tojo Eiki, Tojo Hideki - Japanese army officer who initiated the Japanese attack on Pearl Harbor and who assumed dictatorial control of Japan during World War II; he was subsequently tried and executed as a war criminal (1884-1948)

Big Brother - an authoritarian leader and invader of privacy

disciplinarian, martinet, moralist - someone who demands exact conformity to rules and forms

oppressor - a person of authority who subjects others to undue pressures