The Montlake Branch Library is a branch of Seattle Public Library in Montlake, Seattle, in the U.S. state of Washington.

[4][5] The interior features a "skylight aperture sundial".

[6][7] The sundial was developed by library staff with University of Washington astronomer Woody Sullivan.

[8] Construction on the current building began in August 2005.

[9] The building won two awards: American Institute of Architects (AIA) Seattle Honor Awards for Washington Architecture, Honor Award, 2008; and AIA Washington Civic Design Awards, Merit Award, 2008.