LFO may refer to:
- Low-frequency oscillation, typically below 20 Hz
Arts, entertainment and media
- LFO (British band), short for Low Frequency Oscillation
- "LFO", a song on the album Frequencies
- LFO (American band), short for Lyte Funkie Ones
- LFO (album)
- LFO (film), 2013 Scandinavian sci-fi
- Little Fighter Online, a Windows game
Other uses
- London Festival Orchestra
- Lakeview – Fort Oglethorpe High School, Georgia, United States
- LFO scandal, a political scandal in Poland
- Legal Framework Order, 1970, Pakistan, a decree concerning elections
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