Edgeplain, University dormitory in Colorado Springs, United States.

Edgeplain is a Tudor Revival residence featuring ornamental walls constructed from multi-colored sandstone with rusticated stone detailing. The building currently houses approximately 20 students in shared residential and kitchen spaces as part of Colorado College.

Attorney Lyman K. Bass commissioned architect A.C. Willard to design the structure in 1881, choosing its location near Colorado College for its healthful setting. The building later became a notable social hub under Chester Alan Arthur II, son of a former U.S. President.

The name Edgeplain refers to the house's original site beside undeveloped prairie. Lyman and Frances Bass entertained singers and musicians there, and under Chester Alan Arthur II it became a meeting place for Colorado Springs and Denver social leaders. Vice President Theodore Roosevelt dined at the house in 1901.

The building sits near Colorado College's campus and can be viewed from Nevada Avenue. Access to the interior may be available during specific times or college events, so it is worth checking ahead with the college for visiting opportunities.

The name Edgeplain comes from the building's original position at the boundary between settled land and open prairie. This origin is inscribed on the porch for visitors to discover.