Geraldine Anne Allen (born 1950) is a botanist, professor of biology, and herbarium curator at the University of Victoria in British Columbia, Canada. She obtained formal education at the University of British Columbia and Oregon State University, earning a Doctor of Philosophy degree in botany and plant pathology from the latter in 1981. During her career, she has authored or co-authored over 50 publications, including genera chapters for Flora of North America and the Jepson Manual. She also has authored several species of the Erythronium genus.