Miscellaneous
- Title Transfer Facility, a virtual trading point for natural gas in the Netherlands
- Titus the Fox, a platform game by Titus Interactive
- Trail Technical Feature, a mountain/dirt biking term to describe added trail obstacles that provide an additional challenge
- TTF, The IATA airport code for Custer Airport in Monroe, Michigan, United States
- Tuvalu Trust Fund, an international fund developed by Tuvalu, a small, central Pacific island nation
- Typical Tom Fiasco, a seemingly innocuous event that mushrooms into a failure
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