Societas Rosicruciana in Anglia (Rosicrucian Society of England) or SRIA is a Rosicrucian esoteric Christian order formed by Robert Wentworth Little between 1865 and 1867. While the SRIA is not a Masonic order (unattached to any Grand Lodge structure or Masonic Rite), aspirants (people seeking membership) are strictly confirmed from the ranks of subscribing Master Masons of a Grand Lodge in amity with United Grand Lodge of England.
The structure and grade of this order, as A. E. Waite suggests, were derived from the 18th-century German Order of the Golden and Rosy Cross. It later became the same grade system used for the Hermetic Order of the Golden Dawn.