Ülo is an Estonian masculine given name.
People named Ülo include:
Ülo Altermann (1923–1954), soldier and forest brother
Ülo Jõgi (1921–2007), war historian, nationalist and activist
Ülo Kaevats (born 1947), statesman, academic, and philosopher
Ülo Lumiste (born 1929), mathematician
Ülo Matjus (born 1942), philosopher
Ülo Mattheus (born 1956), writer and journalist
Ülo Nugis (born 1944), politician and economist
Ülo Õun (1940–1988), sculptor
Ülo Sooster (1924–1970), painter
Ülo Tootsen (1933–2006), journalist and politician
Ülo Tuulik (born 1940), writer
Ülo Vinter (1924–2000), composer
Ülo Voitka (born 1968), freedom fighter, forest brother, and pro-anarchist
Ülo Vooglaid (born 1935), social scientist and politician
