HMM

HMM or hmm may refer to:

Arts and entertainment

 * Hail Mary Mallon, an American hip-hop group
 * Hallmark Movies & Mysteries, a U.S. cable channel
 * Heavy metal music, a subgenre of rock music
 * Heroes of Might and Magic, a video game series (also abbreviated as HoMM)
 * High-end Master Model, a high-quality Zoids model kit

Organizations

 * Hatch Mott MacDonald, a North American engineering consulting firm
 * HMM, a South Korean shipping company
 * Homenmen, an Armenian sporting organization

Science and technology

 * Heavy meromyosin, a protein fragment
 * Heterogeneous memory management, in the Linux kernel
 * Hidden Markov model, a statistical model

Other uses

 * Central Mashan Miao language (ISO 639-3 code), spoken in China
 * Hammerton railway station (National Rail code), England, National Rail