The Swede returned to the Amsterdam Arena to deny Ajax a famous victory by hitting a sweet volley past Maarten Stekelenburg in the 37th minute after Mounir El Hamdaoui put the hosts in front in the 23rd minute.
Despite the draw, Milan boss Max Allegri was content with how his side performed although he admitted there was some room for improvement.
"The team played well, we had chances to win and didn't take them, so it remains positive to emerge unbeaten from Amsterdam," he said. "We can use this system again or the three strikers, it depends on the characteristics of the players we put on the field.
"At the end of the day what counts is to win. Milan have the characteristics to play great football, but we all know that we have to improve. We were under pressure above all because we didn't clear the ball well. We all want to play great football, but the most important thing is to win."
UEFA Champions League Group GAjax Amsterdam (HOL): 1 (Mounir El Hamdaoui 23') AC Milan (ITA): 1 (Zlatan Ibrahimovic 37') Venue: Amsterdam Arena Crowd: approx. 45,000 Referee: Felix Brych Yellow cards:AJA - Eyong Enoh 54' AC - Robinho 39', Mathieu Flamini 40', Gianluca Zambrotta 59', Gennaro Gattuso 65', Luca Antonini 68'
AJAMaarten Stekelenburg (gk), Jan Vertonghen, Toby Alderweireld, Vurnon Anita (Sulejmani 39'), Gregory van der Wiel, Siem de Jong, Demy de Zeeuw (Lindgren 80'), Eyong Enoh, Urby Emanuelson, Mounir El Hamdaoui, Luis Suarez
ACChristian Abbiati (gk), Thiago Silva, Alessandro Nesta, Andrea Pirlo, Luca Antonini, Gianluca Zambrotta, Clarence Seedorf (Abate 85') Gennaro Gattuso, Mathieu Flamini (Boateng 52'), Zlatan Ibrahimovic, Robinho (Inzaghi 86')