2008-09: Vladislav Namestnikov played for Khimik Voskresensk-2 in the Russian junior league. He played for Russia at the World Under-17 Hockey Challenge, scoring 8 goals and adding 2 assists for 10 points in 5 games.
2009-10: In 26 games for Khimik Voskresensk, Namestnikov scored 11 goals and added 6 assists for 17 points. Namestnikov played for Russia at the 2010 U-18 World Junior Championship, scoring 5 goals and adding 2 assists for 7 points in 7 games. Namestnikov was chosen in the first round, 20th overall, of the 2010 CHL Import Draft by the OHL's London Knights.
2010-11: In his OHL rookie season, Namestnikov played in 68 games for the London Knights. He scored 30 goals and added 38 assists for 68 points. In 6 playoff games, Namestnikov scored 1 goal and added 4 assists for 5 points. Namestnikov played for Team Orr at the 2011 CHL Home Hardware Top Prospects Game, picking up 1 assist in his team's 7-1 win over Team Cherry. Namestnikov was chosen in the first round, 11th overall, of the 2011 KHL Draft by Torpedo Nizhny Novgorod.
2011-12: Namestnikov was the second-leading scorer for OHL champion London in his second season with the Knights. A surprising late cut from the Russian U20 team that played in the 2012 World Junior Championship, he scored 22 goals with a team-high 49 assists and was plus-15 with 50 penalty minutes in 63 games for the Knights. London had the OHL's best record in the regular season and rolled through the playoffs. Namestnikov scored 4 goals with 14 assists and was plus-10 with 18 penalty minutes in 19 playoff games. He scored 2 goals and was minus-three in four games at the Memorial Cup tournament.