Donostia is the Basque name for Spanish city San Sebastián. It might also refer to:
Donostia CF, previous name of football club Real Sociedad Donostia Award, acting honour Donostia-Donostia Klasikoa, cycling race Donostia Arena, basketball arena Donostia-San Sebastián International Peace Conference, 2011 conference Donostia/San Sebastián 2016, 2016 cultural programme