luiz

Luiz is a masculine given name used primarily in Portuguese-speaking countries. It is the Brazilian Portuguese spelling of Louis, which comes from the Latin Ludovicus, itself from the Germanic roots hlud- meaning "fame" and wig meaning "war" or "battle." The form Luís is common in Portugal, while Luiz is prevalent in Brazil; cognate forms include Louis (French) and Luis (Spanish).

In Brazil, Luiz is common as a given name across generations. It frequently appears in full names such as Luiz Carlos, Luiz Felipe, or as part of longer compound names. Across the Portuguese-speaking world, related spellings reflect the broader family of names derived from Louis, with Luís typical in Portugal and Luiz common in Brazilian usage.

Notable individuals named Luiz include the Brazilian president Luiz Inácio Lula da Silva (born 1945), commonly known as Lula; the footballer David Luiz Moreira Marinho (born 1987); the football manager Luiz Felipe Scolari (born 1948); the musician Luiz Gonzaga do Nascimento (1912–1989); and the diplomat Luiz Felipe Lampreia (1941–2011).

The name Luiz remains common in modern Brazil and across the Lusophone world as part of a broader set of forms derived from Louis. Variations in spelling reflect national standards, notably Luiz in Brazil and Luís in Portugal.