Western Washington University (WWU or Western) is a public university in Bellingham, Washington, United States. The northernmost university in the contiguous United States, WWU was founded in 1893 as the state-funded New Whatcom Normal School, succeeding a private school of teaching for women founded in 1886. The university adopted its present name in 1977.

WWU offers bachelor's, master's and doctoral degrees. In 2022, there were 14,747 students, 13,801 of whom were undergraduate students, and 664 full-time faculty. Its athletic teams are known as the Vikings, and compete in Division II of the National Collegiate Athletic Association.

The main campus is on 215 acres in Bellingham. WWU also operates a marine center in Anacortes and academic locations in Everett and the Olympic and Kitsap Peninsulas. WWU is accredited by the Northwest Commission on Colleges and Universities.