Sam Squirrel is the unofficial mascot of the Wyoming Union Building. Inspired by a real trouble making squirrels that reside in the courtyard of the building. The real Sam was notoriously known for steal food, on one occasion even opening someone's backpack to steal a bag of trail mix.

Sam was created to advertise some of the stores inside the Wyoming Union and quickly became a fan favorite character. Since he was so popular same was used in many of the Wyoming Union's including the buildings 75 anniversary and the student graduation parties.