Officers responded to the scene, O'Houlie's Pub at 21919 66th Avenue West, after receiving a report that someone had been stabbed in a fight, said Cmdr. Don Duncan of the Mountlake Terrace police.
Several people ran from the area when officers arrived, but three suspects were later arrested.
One of the victims is at Harborview Medical Center in critical condition. Police were still awaiting information on the second victim.
One of the suspects was treated for unspecified injuries at the scene. A second suspect also is bring treated at Swedish Hospital in Edmonds and will probably be transferred to Harborview.