A rosarium is a rose garden. It may also refer to:
Religion Rosary (Latin: rosarium, in the sense of "crown/garland of roses"), an aspect of Catholic devotion Rosarium Virginis Mariae, an Apostolic Letter by Pope John Paul II, declaring October 2002 to October 2003 the "Year of the Rosary" Rosary of the Philosophers (Rosarium philosophorum sive pretiosissimum donum Dei), a 16th-century alchemical treatise
Specific rose gardens Europa-Rosarium, formerly the Rosarium Sangerhausen, in Sangerhausen, Saxony-Anhalt, Germany Rosarium Uetersen in the Rosenstadt Uetersen, Schleswig-Holstein, Germany
Biology Ctenotus rosarium, a species of skink found in Queensland, Australia Hexaplex rosarium, a species of sea snail
See also Rose Garden (disambiguation) Rosaria (disambiguation) Rosario (disambiguation) Rosarius (disambiguation)