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Look up unsub in Wiktionary, the free dictionary.
Unsub may refer to:
- Unsub (TV series), a 1989 television series starring David Soul as a forensic investigator
- Unsub Records, an American record label
- "Unknown subject" or "Unidentified subject of an investigation", jargon for person of interest used in some American TV crime shows
- Unsub, an analytics service by OurResearch to help libraries cancel subscriptions