Villu is an Estonian masculine given name, a version of William.
People named Villu include:
Villu Jürjo (born 1950), Lutheran cleric and politician Villu Kangur (born 1957), poet, translator, actor and screenwriter Villu Kõve (born 1971), judge, Chief Justice of the Supreme Court of Estonia Villu Müüripeal (1937–2005), agronomist and politician Villu Reiljan (born 1953), politician Villu Tamme (born 1963), punk musician (J.M.K.E.) Villu Toots (1916–1993), calligrapher, book designer, educator, palaeographer and author Villu Veski (born 1962), saxophonist and music teacher