The abbreviation LM or lm may refer to:
LMMS (formerly Linux MultiMedia Studio) is a digital audio workstation application program. When LMMS is executed on a computer with appropriate hardware, it allows music to be produced by arranging samples, synthesizing sounds, playing on a MIDI keyboard and combining the features of trackers and sequencers.
Lamin A/C also known as LMNA is a protein that in humans is encoded by the LMNA gene. Lamin A/C belongs to the lamin family of proteins.
The LM317 is a popular adjustable positive linear voltage regulator. It was designed by Robert C Dobkin in 1976 while he worked at National Semiconductor.