DFSM may refer to:
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Defence Force Service Medal
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Deterministic finite state machine
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Dry-film photoimageable solder mask
Solder mask, solder stop mask or solder resist is a thin lacquer-like layer of polymer that is usually applied to the copper traces of a printed circuit board (PCB) for protection against oxidation and to prevent solder bridges from forming ...
, a type of solder mask on printed circuit boards
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Irish Defence Forces School of Music
The Irish Defence Forces School of Music (''Scoil Cheoil Óglaigh na hÉireann'') is established as a Corps of the Irish Defence Forces and has responsibility for the maintenance and training of the three military bands of the Defence Forces. It co ...
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