Daiana is a feminine given name.

Notable people with the name include:

• Daiana Capdevila (born 1987) – Argentine chemist
• Daiana Cardone (born 1989) – Argentine former footballer
• Daiana Falfán (born 2000) is an Argentine professional footballer
• Daiana Farías (born 1999) – Uruguayan professional footballer
• Daiana Garmendia (born 1991) – Argentine badminton player
• Daiana Hissa (born 1980) – Argentine politician
• Daiana Alves Menezes (born 1987) – Brazilian actress, singer, and television host
• Daiana Ocampo (born 1991) – Argentine long-distance runner
• Daiana Pacheco (born 2002) – Argentine field hockey player.
• Daiana Santos (born 1982) is a Brazilian politician
• Daiana Serafim da Silva (born 1992), known as Day Silva – Brazilian professional footballer
• Diana Yukawa (ダイアナ湯川, Daiana Yukawa) – Japanese-born British solo violinist and composer