FFS

See Fee-For-Service.
Found on http://www.pohly.com/terms_f.html

FFS

Fast File System
Found on http://www.encyclo.co.uk/visitor-contributions.php

FFS

Fine-blanking and Finishing System
Found on http://www3.sympatico.ca/dhaughey/j1930.htm

FFS

Flexible Fuel Sensor
Found on http://www3.sympatico.ca/dhaughey/j1930.htm

FFS

For F*** Sake
Found on http://www.netlingo.com/acronyms.php

ffs

for fuck's sake
Found on http://www.noslang.com/dictionary/f/

FFS

For f***'s sake
Found on http://www.chatslang.com/terms/online_gaming
No exact match found