Diniz is a Portuguese-language surname. It may refer to:
- Denis of Portugal (1261–1325), the sixth King of Portugal and the Algarve
- Abilio Diniz (born 1936), Brazilian businessman, father of Pedro
- Alex Diniz (born 1985), Brazilian cyclist
- Gabriel Diniz (1990–2019), Brazilian singer and composer
- Jacinto F. Diniz (1888–1949), American politician
- Mauro Diniz (born 1952), Brazilian cavaquinist and singer
- Paulo Diniz (1940–2022), Brazilian singer
- Paulo Roberto Diniz Jr. (fl. 1990s–2010s), Brazilian bass guitarist
- Pedro Diniz (born 1970), Brazilian racing driver, son of Abílio
- Priscillo Diniz (born 1948), Brazilian golfer
- Fernando Diniz (born 1974), Brazilian football coach
- Yohann Diniz (born 1978), French race walker
This page lists people with the surname Diniz.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.