Dave Sobolewski scored 14 points to lead Northwestern in a 63-42 victory over Brown on Sunday.
Kale Abrahamson, Alex Marcotullio and Tre Demps each had nine points for the Wildcats (9-4) in their final game before Big Ten play begins.
Sean McGonagill scored 20 points to lead Brown (3-6), which has lost three straight and five of six.
Northwestern made 13 of 24 from 3-point range, with Sobolewski and Marcotullio each hitting three. Six Wildcat players made at least one 3-pointer.
Reggie Hearn, leading Northwestern with 14.5 points per game, did not play because of an ankle injury suffered in Friday's 70-68 loss to Stanford. Marcotullio started in Hearn's place.