Blessed Helena Stollenwerk (†1900) was a German Roman Catholic and a professed member of the Sisters Servants of the Holy Spirit of Perpetual Adoration under the religious name of "Maria Virgo". Stollenwerk collaborated with Arnold Janssen and Hendrina Stenmanns and co-founded the Missionary Sisters Servants of the Holy Spirit. Pope John Paul II presided over the beatification celebration for Stollenwerk in 1995 after naming her a Servant of God on 2 April 1982 and as Venerable in 1991.