Rose Mary Almanza Blanco (born 13 July 1992) is a Cuban middle-distance runner who competes in the 800 metres.

[3][4] She won at the Barrientos Memorial in March 2010 and followed this with a personal best of 2:03.03 to take the silver medal at the 2010 Ibero-American Championships in Athletics.

[4] In 2011, she improved her record further to 2:00.56 and won her first senior regional medal at the 2011 Central American and Caribbean Championships in Athletics, placing second in the 800 m behind Gabriela Medina.

[8] She began 2012 in strong form, taking silver medals in the 800 m and 4×400 metres relay at the Ibero-American Championships.

By June 2021, Almanza had returned to career-best form in the 800m, running another personal best and world-leading time of 1:56.42 in Ordizia, Spain.