DFL

DFL stands for:

German Research Institute for Aviation, a former research facility in Braunschweig
DFL German Football League, a subsidiary of The League - Football Federation and operating company of the 1st Bundesliga and 2nd Bundesliga
Pressure- flow, a method for the deburring of bores
Minnesota Democratic - Farmer-Labor Party, a party in the U.S. state of Minnesota
David Florida Laboratory, a satellite construction and testing center of the Canadian Space Agency