Inf or INF may refer to:
Computing INF file, a file extension (information file) used by software and hardware driver installation routines INF help file, a binary help file created after compiling IPF help source with IBM or Open Watcom's help compiler. Informatics (academic field), the science of information and the practice of information processing
Mathematics Infinity, referring to something without any limit Infimum, the greatest lower bound of a subset of a partially ordered set
Politics Intermediate-Range Nuclear Forces Treaty, a 1987 arms control treaty between the United States and the Soviet Union International Naturist Federation, the global umbrella organisation representing official national naturist societies International Netball Federation, the international governing body for the sport of netball Irish National Federation, a nationalist political party in Ireland 1891–1900
Places In Guezzam Airport, Algeria INF Clairefontaine, France national football team centre
Biology Inferior; see Anatomical terms of location § Superior and inferior Inflammation, part of the immune response to tissue damage or infection
Military Infantry, land based soldiers who are specifically trained for the role of fighting on foot
People Issey Nakajima-Farran, Canadian soccer player