Gualtiero is the name of:

• Gualtiero Bassetti (born 1942), Italian prelate
• Gualtiero Calboli (born 1932), Italian classicist and linguist
• Gualtiero De Angelis (1899–1980), Italian actor and voice actor
• Gualtiero Driussi (1920–1996), Italian politician and syndicalist
• Gualtiero Giori (1913–1992), Italian security printer and inventor
• Gualtiero Jacopetti (1919–2011), Italian documentary film director
• Gualtiero Marchesi (1930–2017), Italian chef
• Gualtiero Negrini (born 1961), American conductor, filmmaker, singer, actor, director and vocal coach
• Gualtiero Piccinini (born 1970), Italian-American philosopher
• Gualtiero Tumiati (1876–1971), Italian actor and stage director
• Gualtiero Zanolini, volunteer member of the World Scout Committee

• Walter of Palearia (died 1229 or 1231), chancellor of the Kingdom of Sicily