Liviu is a Romanian given name deriving from Latin Livius. Liviu may refer to:
- Constantin-Liviu Cepoi (born 1969), a Romanian-Moldovan luger
- Dorin Liviu Zaharia (1944–1987), Romanian pop musician
- Liviu Cangeopol (born 1954), a Romanian writer, journalist, and political dissident
- Liviu Ciobotariu (born 1971), a Romanian football defender
- Liviu Ciulei (born 1923), a Romanian theater and film director, actor and architect
- Liviu Comes (1918–2004), a Romanian composer and musicologist
- Liviu Constantinescu (1914–1997), a Romanian geophysicist and professor
- Liviu Cornel Babeș (1942–1989), a Romanian who committed suicide as a political protest
- Liviu Floricel, a Romanian football player
- Liviu Ganea (born 1988), a Romanian football (soccer) striker
- Liviu Hapaină (born 1978), a Romanian football player
- Liviu Librescu (1930–2007), a Romanian born and educated Israeli-American scientist
- Liviu Mancas, a former Romanian tennis player
- Liviu Marinescu (born 1970), a Romanian composer of orchestral and chamber music
- Liviu Mihai (born 1977), a Romanian professional football player
- Liviu Naghi (1929–1989), a Romanian basketball player
- Liviu Negoiță (born 1962), a Romanian politician and lawyer
- Liviu Negoiță (footballer) (born 1977), a Romanian footballer
- Liviu Rebreanu (1885–1944), a Romanian novelist, playwright, and journalist
- Liviu-Dieter Nisipeanu (born 1976), a Romanian chess grandmaster