The Gunners boss was left frustrated that his side was not given a penalty during their 2-1 defeat to Newcastle United on Sunday.
With the visitors 1-0 up at St. James’ Park, Pierre-Emerick Aubameyang saw a shot deflected over the crossbar by defender Jamaal Lascelles, who blocked the ball in the box with a raised hand.
Referee Anthony Taylor awarded a corner rather than a spot-kick and Newcastle levelled the scores just 12 minutes later through Ayoze Perez.
With Premier League clubs having voted to restrict VAR to cup competitions once more in 2017-18, Wenger thought such incidents will continue to undermine matches.
“The referee is the referee,” he told a news conference. “What you want is to help the referee. Unfortunately, the Premier League has decided not to go for VAR. I think that is a very bad decision.
“I believe, with that decision, we are behind the rest of the world.”
The Lascelles incident did not distract from a poor showing from the Gunners in the second half, in which Matt Ritchie struck the game’s crucial third goal to condemn the visitors to a fifth away defeat in a row in the top flght for the first time since 1984.
“It’s a bit the story of the season. We had 70 per cent of the ball, were 1-0 up and in the end you lose 2-1 and you wonder how you can lose this game,” said a rueful Wenger.