Poornima Oak is an Indian costume designer, who works in the Marathi film industry. She made her debut in 2012 with director Chandrakant Kulkarni’s historical drama, Tukaram. Poornima next worked on Satish Motling’s social satire, Priyatama (2014). She followed it up with another historical drama, Rama Madhav (2014). In 2017 Poornima worked with director Govind Nihalani on his Marathi directorial debut, Ti Ani Itar.