The Atrium Music Lounge is a distinctive bar and music venue located in Fort Collins, Colorado. Situated beneath the Alley Cat Café, it offers a relaxed atmosphere that serves as an alternative to traditional bars. The venue features a variety of events, including open mic nights, DJ sets, and live performances, catering to a diverse audience.

In August 2024, The Atrium announced plans to sell the venue, with the intention of maintaining its legacy as a space for music lovers. While the search for a new owner is ongoing, the venue continues to host events.