Alvaro Morata ended his scoring drought by putting Spain ahead in the 25th minute but Lewandowski evened things in the 54th with a header for only his third goal with the national team at a major tournament.
Spain striker Gerard Moreno missed a penalty kick shortly after Lewandowski's goal and Morata then missed an open net after after the ball rebounded off the post.
The result leaves Sweden at the top of Group E with four points after its win over Slovakia on Friday. Slovakia is second with three points while Spain has two. Poland still has a chance of advancing at Euro 2020 despite being last in the group with one point.
