TNF (tumor necrosis factor) is a cell signaling protein (cytokine) involved in systemic inflammation.
TNF may also refer to: Talking News Federation, UK charitable organization (see Talking Newspaper Association of the United Kingdom) The NetBSD Foundation, US not-for-profit corporation that owns the intellectual property and trademarks associated with the NetBSD operating system The North Face, US outdoor products manufacturer Third normal form, in database normalization Thursday Night Football, NFL weekly sports broadcast Tumor necrosis factor superfamily, a protein superfamily Tonfanau railway station, Gwynedd, Wales (National Rail station code) Toussus-le-Noble Airport