The Sky Sports pundit will work with the terrestrial broadcaster’s studio team based in Moscow.
The deal was made with the agreement of Sky Sports, who cannot cover World Cup matches live.
Former England and Manchester United defender Neville said: “I’m delighted to join the team at ITV for next summer’s World Cup coverage and thank Sky for also making it possible.
“I’ll look forward to joining up with them in Russia next June.”
Niall Sloane, ITV’s director of sport, added: “Gary Neville is one of the most respected and valued voices in football broadcasting.
“His experience, insight and understanding of both football and footballers will greatly enrich our coverage of next year’s World Cup.”
He will join ITV’s main football presenter Mark Pougatch, while his fellow pundits include former United team-mate Ryan Giggs as well as Ian Wright and Lee Dixon.
His brother Phil works as a television and radio pundit for the BBC, which will also offer live coverage the tournament.
The commercial station will announce its full World Cup line-up closer to the tournament.