Vyacheslav "Slava" Leonidovich Voynov (Russian: Вячесла́в Леони́дович Во́йнов; born 15 January 1990) is a Russian professional ice hockey defenceman who is currently playing for Avangard Omsk of the Kontinental Hockey League (KHL), while also being suspended by the National Hockey League (NHL). The Los Angeles Kings terminated Voynov's six-year, $25-million contract in 2015 but retained his rights. Voynov was selected by the Kings in the second round, 32nd overall, of the 2008 NHL Entry Draft.
Voynov began his career with Traktor Chelyabinsk, playing his rookie Russian Superleague (RSL) season in 2006–07. After a second campaign with Traktor, he was selected in the second round, 32nd overall, by the Los Angeles Kings in the 2008 NHL Entry Draft. The Kings, in their efforts to translate his Cyrillic-scripted name into the Latin alphabet, originally spelled his given name as "Viatcheslav." In the same off-season, Voynov was also drafted fifth overall by the Quebec Major Junior Hockey League (QMJHL)'s Moncton Wildcats in the 2008 Canadian Hockey League (CHL) Import Draft. However, because of his two seasons of professional experience in Russia, Voynov was eligible to forego the junior process in North America, and was subsequently assigned to the Kings' minor league affiliate, the Manchester Monarchs, in the American Hockey League (AHL). He recorded eight goals and 23 points in his AHL rookie season, and in the following campaign, he improved to 29 points in 79 games. In 2011, he was selected to represent the Eastern Conference at the 2011 AHL All-Star Game.