Guiomar Maristany Zuleta de Reales (born 19 February 1999) is a Spanish tennis player. Maristany has a career-high WTA singles ranking of world No. 296, achieved on 18 July 2022, and a career-high WTA doubles ranking of world No. 308, also achieved on 11 July 2022. She has won five singles and four doubles titles on the ITF Women's Circuit.