Bis(trifluoromethanesulfonyl)aniline is the organic compound with the formula C<sub>6</sub>H<sub>5</sub>N(SO<sub>2</sub>CF<sub>3</sub>)<sub>2</sub>. It is a white solid. The compound is used to install the triflyl group (SO<sub>2</sub>CF<sub>3</sub>). Its behavior is akin to that of triflic anhydride, but milder.