Dayana is a given name. Notable people with the name include:

Given name

* Dayana (pronunciation d̪ɪɑɴɑ, Language Hebrew, the Judge) variant of the given name Diana (given name), Diana * Dayana Cadeau (born 1966), Haitian-born Canadian American professional bodybuilder * Dayana Cázares (born 1999), Mexican football midfielder * Dayana Colmenares (born 1984), Miss Venezuela International 2007 * Dayana Garroz (born 1978), Venezuelan actress * Dayana Kirillova (born 2002), Russian singer * Dayana Martinez (born 1986), Venezuelan épée fencer * Dayana Mendoza (born 1986), Venezuelan Miss Universe 2008 and contestant on Celebrity Apprentice * Dayana Rodríguez (born 2001), Venezuelan footballer * Dayana Yastremska (born 2000), Ukrainian professional tennis player

Nature

* Laudakia dayana, species of Agamid lizard found in Haridwar, India * Sophronitis dayana, species of orchid endemic to Brazil (southern Minas Gerais to Rio de Janeiro) {{given name Hebrew feminine given names