Geltrude Comensoli was an Italian religious sister who lived from 1847 to 1903. Born in Bienno, she initially sought religious life with the Sisters of Charity, but her path was interrupted by a period of serious illness that forced her into domestic service. Following her recovery and the death of her parents, she worked to educate children in Bergamo. Encouraged by Bishop Pietro Luigi Speranza and Pope Leo XIII, she eventually established the Congregation of the Sacramentine Sisters to focus on Eucharistic adoration and the education of young female factory workers.