.sgm

.sgm may refer to the following file formats:


 * Standard Generalized Markup Language
 * Encoded Archival Description Document, an XML standard for encoding archival finding aids, maintained by the Library of Congress and the Society of American Archivists
 * SoftQuad XMetaL File, for the SoftQuad Software XMetaL
 * Visual Boy Advance Saved State File, VisualBoyAdvance