Melissa McMorrow Ramalho (born June 19, 1981) is an American professional boxer and architect. She is a former two time WBO female flyweight champion, having held the title from 2012 to 2013 and again in 2015, and held the WIBF flyweight title from 2012 to 2013. She has also challenged for the WBA interim female flyweight title in 2012 and the WBC female flyweight title in 2018.