William "Bill" Edward Binney (born September 1943)[4] is a former intelligence official with the United States National Security Agency (NSA) and whistleblower.

Binney has also been publicly critical of the NSA for spying on U.S. citizens, saying of its expanded surveillance after the September 11, 2001 attacks that "it's better than anything that the KGB, the Stasi, or the Gestapo and SS ever had"[16] as well as noting Trailblazer's ineffectiveness and unjustified high cost compared to the far less intrusive ThinThread.

[15] He was furious that the NSA hadn't uncovered the 9/11 plot and stated that intercepts it had collected but not analyzed likely would have garnered timely attention with his leaner more focused system.

[14] After he left the NSA in 2001, Binney was one of several people investigated as part of an inquiry into a 2005 exposé by The New York Times on the agency's warrantless eavesdropping program.

[18] The NSA revoked his security clearance, forcing him to close a business he ran with former colleagues at a loss of a reported $300,000 in annual income.

Several months later the FBI raided the home of then still active NSA executive Thomas Andrews Drake who had also contacted DoD IG, but anonymously with confidentiality assured.

[26] Binney has asserted that the U.S. intelligence community's assessment that Russia interfered in the 2016 presidential election is false, and that the Democratic National Committee e-mails were leaked by an insider instead.

[10][27][28] Duncan Campbell said that Binney had been persuaded by a pro-Kremlin disinformant that the theft of the DNC emails was an inside job, and not the work of Russian agents (contrary to the findings of the US intelligence community).

[10] However, on meeting Campbell and analysing the material again, Binney changed his position: he said there was "no evidence to prove where the download/copy was done", and that the files he had based his previous assessment were "manipulated" and a "fabrication".

[31] During the show, host Alex Jones announced that Binney had been able to provide him with the actual memo, and the purported leaked document was shown on air.

[35] After Joe Biden won the 2020 United States presidential election and Donald Trump refused to concede, Binney doubted the official results and claimed that there had been large-scale voter fraud.