Mai Ooishi (大石麻衣 Oishi Mai) is a retired Japanese actress who portrayed Mai Tsubasa (Change Phoenix) in Dengeki Sentai Changeman. Before Changeman, Ooishi had portrayed one of the Iga Girls in Uchuu Keiji SharivanIcon-crosswiki and Girl 2 of Girls Army from Uchuu Keiji Shaider episodes 16 to 35, in which she was credited as Hiroko Oouti.

In 2019, she was one of four Sentai actresses who made a cameo as a customer in the finale of Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger, Number 51: I'm Sure I'll See You Again.