Spygate may refer to:

• 2007 Formula One espionage controversy, allegations that confidential technical information was passed among F1 teams
• Spygate (NFL), the disciplining of the New England Patriots for unauthorized videotaping of an opposing team's hand signals during the 2007 season
• Spygate (conspiracy theory), allegations that a spy was embedded in Donald Trump's 2016 presidential campaign
• Houston Astros sign stealing scandal, the disciplining of the Houston Astros for illegally using technology to steal an opposing team's signs during the 2017 MLB season
• A controversy over observation of an opponent's practice session during the 2018–19 Leeds United F.C. season