Chad Johnson is trying to enlist the FBI's help in tracking the person who allegedly leaked his sex tape onto the Internet.

TMZ says the football star is "furious" over the violation of his privacy and believes the video, depicting Chad's escapades with two women, was hacked from his phone.

Chad has admitted that he is the man in the tape and says it was shot more than three years ago. Chad is wasting no time waiting for the FBI to respond -- he's already contacted his lawyer in an effort to get the footage pulled from the Internet.

Check out the NSFW picture stills of the video RIGHT HERE!!!!!

THIS is the "co-star" on this escapade, her name is "Wankaego" -

WARNING: This is NOT safe for work, unless your boss is into this type of thing!