Melissa McMorrow Ramalho (born June 19, 1981) is an American professional boxer and architect.
McMorrow is a former two-time WBO female flyweight champion, having held the title from 2012 to 2013, during which time she also held the WIBF flyweight title, and again in 2015. She also challenged for the WBA interim female flyweight title in 2012 and the WBC female flyweight title in 2018. McMorrow was inducted into the International Women's Boxing Hall of Fame in 2023.