LaSalle Annex is a historic multi-use commercial building located at South Bend, Indiana. It was built in 1925, and is a three to four-story, six bay by eight bay, building constructed of concrete, stone, and brick. It features an Italianate style tower and round arched openings. It was originally built as a multi-use building containing stores, a parking structure, hotel rooms, bachelor apartments, and a variety of large recreational facilities including a roller rink, dance floor, and bowling alley. It was originally built as an annex to the LaSalle Hotel.
It was listed on the National Register of Historic Places in 1985.