Fluorosulfonate, in organic chemistry, is a functional group that has the chemical formula F-SO2-R, and typically is a very good leaving group.

In organic chemistry, fluorosulfonate is different than fluorosulfate.

In inorganic chemistry, fluorosulfonate is another term for fluorosulfate, the anion F-SO2-O−, the conjugate base of fluorosulfonic acid.

They form a series of salts with metal and organic cations called fluorosulfates.

This organic chemistry article is a stub.