Avishai Raviv (born 8 June 1967, Hebrew: אבישי רביב) is a former agent of Israel's Shin Bet (Shabak), Israel's domestic intelligence service, whose mission was to monitor the activities of right-wing extremists. His code name was 'Champagne' (Hebrew: שמפניה, romanized: Shampaniyah).^[1]

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Avishai Raviv studied at Tel Aviv University, which expelled him for violent behavior, and later at Bar Ilan University.^[2]

Raviv was filmed at a public demonstration with a poster of Israeli prime minister Yitzhak Rabin in an SS uniform prior to Rabin's murder.^[1] Raviv allegedly knew of Yigal Amir's plans to assassinate Rabin.

After Rabin was assassinated, the journalist Amnon Abramowitch revealed that Raviv was an agent of the Shabak.

Raviv was brought to trial in 2000 for not preventing Rabin's assassination. Raviv mounted a successful defense on the grounds that he had just been doing his job and events had spun out of control.^[2]