The One North LaSalle Building or One LaSalle Street Building is a building in the LaSalle Street corridor in the Loop community area of Chicago managed by One North Realty LLC. It was for some time one of Chicago's tallest buildings. Built in 1930 by architects Vitzthum & Burns, it replaces the Tacoma Building by Holabird & Roche. The building is located across Madison Street from Roanoke Building.