Jenne Block is a two-story brick commercial building in downtown Douglas, Wyoming.

The building housed a bank and the local Douglas Enterprise newspaper, as well as professional offices.

The corner entrance is set at an angle to face the Center and South Third Streets intersection and is topped by a terra cotta crest with a JJ monogram.

A raised entry at the middle of the long side provides access to the upper floors, with a basement stair set underneath.

[2] Jenne Block was listed on the National Register of Historic Places on January 6, 1998.