Servant of God Carmen Hernández (1930–2016) was a Spanish missionary and co-initiator of the Neocatechumenal Way, a movement dedicated to the renewal of Christian life and evangelization within the Catholic Church. Born in Ólvega, Spain, she studied chemistry before feeling a deep call to missionary work. Influenced by the Second Vatican Council and her experiences with the poor, she pursued theological studies and sought to evangelize in India. However, her path led her to Madrid, where she met Kiko Argüello in the 1960s, and together, they founded the Neocatechumenal Way, a community focused on deepening faith through catechesis, liturgy, and communal life.

Carmen played a crucial role in shaping the theological and scriptural foundations of the movement, emphasizing the importance of the Eucharist and the early Christian model of faith. She was known for her deep spirituality, strong personality, and unwavering dedication to evangelization. Alongside Kiko, she helped spread the Neocatechumenal Way worldwide, fostering thousands of communities that revived faith in parishes and led to numerous priestly and religious vocations. The movement received formal recognition from the Vatican, supported by several popes, including Saint John Paul II and Pope Benedict XVI.

Until her passing in 2016, Carmen remained an influential figure in the Catholic Church, inspiring countless people through her faith, wisdom, and commitment to spreading the Gospel. In 2021, the cause for her beatification was officially opened.