DF or df may refer to:
DFS ("DFS Group") is a Hong Kong-based travel retailer of luxury products. Established in 1960, its network consists of duty-free stores located in 17 major airports and 18 downtown Galleria stores, as well as resort locations worldwide.
DFNS–Syrian Arab Republic relations concern the military and political relations between the forces of the Ba'athist Syrian Arab Republic and those of the Democratic Federation of Northern Syria, a de facto autonomous Kurdish-majority region in Northern Syria.
DFA Records is an independent record label and production team (known as The DFA), launched in September 2001 by Mo' Wax co-founder Tim Goldsworthy, musician James Murphy, and manager Jonathan Galkin.
DFW Tornados (also known as Dallas–Fort Worth Tornados) was an American soccer team based in Dallas, Texas, United States.
In automata theory (a branch of computer science), DFA minimization is the task of transforming a given deterministic finite automaton (DFA) into an equivalent DFA that has a minimum number of states.