The Anonyma Bellermanniana is an anonymous treatise on Greek music theory, dated to between the 3rd and 6th centuries CE. Its name derives from its 19th-century editor, Friedrich Bellermann. The author’s identity and background are unknown, but the work’s technical content suggests a compiler or scholar working within the late antique tradition of Greek harmonic science.

The single extant work is the Anonyma Bellermanniana, also called the Musical Work Bellermanniana. This compilation is a significant source for ancient Greek music theory, preserving technical doctrines on scales, intervals, and genera. It serves as a key witness to the transmission of harmonic science into late antiquity and is frequently cited alongside treatises by authors such as Aristoxenus and Alypius.