Diniz
Diniz is a Portuguese-language surname. It may refer to:
- Denis of Portugal, the sixth King of Portugal and the Algarve
- Abílio dos Santos Diniz, Brazilian businessman, father of Pedro
- Alex Correia Diniz, Brazilian cyclist
- Gabriel Diniz, Brazilian singer and composer
- Jacinto F. Diniz, American politician
- Mauro Diniz, Brazilian cavaquinist and singer
- Paulo Roberto Diniz, Jr., Brazilian bass guitarist
- Pedro Diniz, Brazilian racing driver, son of Abílio
- Priscillo Diniz, Brazilian golfer
- Yohann Diniz, French race walker