PWM

PWM may refer to:

Science and technology

 * Position weight matrix, a representation in motifs in biological sequences
 * Pulse-width modulation, a technique for controlling the average power delivered by an electrical signal
 * PWM (window manager), a Unix-based X window manager

Other uses

 * Panzerwurfmine, a type of German anti-tank hand grenade
 * Portland International Jetport, an airport in the U.S.
 * Professional Wealth Management, a financial magazine
 * Permanent Way Machine, the British Rail Class 97/6 locomotives
 * Polskie Wydawnictwo Muzyczne, the Polish Music Publishing House