Weis Earth Science Museum (abbreviated as WESM), located at 1478 Midway Rd, on the University of Wisconsin–Oshkosh, Fox Cities Campus in Menasha, Wisconsin, USA, was opened in 2002.

[1] The museum is organized as theme galleries, interactive displays, and temporary exhibits, as well as research collections and office space.

[2] Curators and staff engage in a wide range of research topics in geology and paleontology, and they have written many scientific papers and books.

[3][4][5][6][7][8][9][10] The WESM is named for Leonard and Donna Weis, who provided the founding financial gift to establish the museum and to endow the director’s position.

Exhibits were designed by founding director Dr. Joanne Kluessendorf in conjunction with Derse Museum Group, Milwaukee.