Maria Andresa Casamayor de La Coma (Spanish: María Andresa Casamayor de La Coma, Sarragosa, November 30, 1720 -Sarragosa, October 23, 1780) was a Spanish mathematician, writer and Spanish girls’ school teacher.
She stood out for her mathematical thinking and work with numbers and made significant contributions to arithmetic, which at the time was considered the exclusive domain of men.
She is one of the few 18th century Spanish women scientists and mathematicians whose work has been preserved, including María Pascuala Caro Sureda.