Master's Hammer are a black metal band from the Czech Republic. They were founded in 1987 and produced several demos, before releasing their debut album Ritual in 1990. Two years later they completed what is now considered as a black metal classicand their magnum opus The Jilemnice Occultist (often misspelt as The Filemnice Occultist due to a typo on the booklet).

Their final album (?lágry in 1995) was a drift away from the previous work incorporating many styles outside the metal genre. Most if not all of their lyrics are written in the Czech language. Although they had a short career, Master's Hammer gathered quite a cult gathering in the underground black metal scene, and have been cited as being very ahead of their time

In 2009 Master's Hammer reformed and on December 2 released "Mantras", their first album in 14 years.