OTF

OTF may refer to:

Science and technology

• OTF knife, or sliding knife, a type of pocketknife
• OpenType, a standard for digital typography (file extension .otf)
• Optical transfer function, a metric for evaluating optical systems
• Triflate, in organic chemistry, a functional group represented by the symbol -OTf
• Off-the-film metering, in camera metering systems, a type of through-the-lens metering

Other uses

• Order of the Falcon, order of chivalry in Iceland
• Obstructing the field, an infringement in cricket
• Only the Family, an American hip-hop collective and the associated record label, OTF
• Ontario Teachers' Federation, Canada
• Open Technology Fund, an American nonprofit corporation

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