Saint Elena Guerra, OSS (†1914) was an Italian Catholic religious sister who founded the Oblates of the Holy Spirit. Guerra was a strong proponent of the Holy Spirit as a motivation for pious works. She dedicated her life to the education of Chinese and African girls. She was beatified in 1959 by Pope John XXIII and canonized in 2024 by Pope Francis. Her Feast Day is commemorated on 11 April.