TDF may refer to:

Businesses and organisations TDF Group, a French media and telecommunications conglomerate Theatre Development Fund, an American performing arts non-profit Templeton Dragon Fund on the New York Stock Exchange The Dawood Foundation, a Pakistani non-profit Target date fund, a form of mutual fund The Document Foundation, an open-source software non-profit

Military Tigray Defense Forces, an Ethiopian paramilitary group Territorial Defense Forces (Ukraine)

Music The Dayton Family, an American horrorcore group Totally Dysfunctional Family, known as TDF, the group pseudonym of Eric Clapton and other musicians for a one-off 1997 album The Dhol Foundation, a dhol troupe from the UK tdf (producer), American music producer from Minneapolis, Minnesota

Science and technology Tab delimited files, a tabular data file format Télé Distribution Française, a radio clock signal transmitter in France TenDRA Distribution Format, a design of abstract machine Tenofovir disoproxil fumarate, an antiretroviral drug Testis determining factor, a gene (or product thereof) that results in maleness The Document Foundation, a non-profit organization that promotes open-source document handling software, particularly LibreOffice Tire-derived fuel, recycled chipped tires burned for fuel Trusted Data Format, a data tagging and protection standard used both commercially and by the United States Intelligence Community and US Department of Defense

Other uses Tour de France, a prestigious cycle race in France Thessaloniki Documentary Festival, a documentary film festival affiliated with the International Thessaloniki Film Festival Theoretical Domains Framework, an implementation tool for Behavioural change theories Total dietary fiber, the indigestible portion of food derived from plants Tierra del Fuego, an archipelago off the southernmost tip of the South American mainland

See also Tour de Force (disambiguation)