Dayaris Rosa Mestre Alvarez (Sancti Spíritus, 20 November 1986) is a Cuban judoka who competes in the women's 48 kg category. At the 2012 Summer Olympics, she was defeated in the second round. She lost the bronze medal match to Galbadrakhyn Otgontsetseg in the women's 48 kg event at the 2016 Summer Olympics.