Wenger believes Mourinho's Inter Milan team were lucky to win last season's Champions League.
Wenger, who had a bitter rivalry with the Portuguese when he was in charge at Chelsea, believes the Italian side benefited from some favourable refereeing.
Two big decisions went their way in the last 16 at Stamford Bridge.
"Look at the teams who got to last year's final," he said.
"With normal refereeing neither of them would have been there. No Bayern, and no Inter."