Mississippi Valley Trust Company Building, Bank building in Downtown St. Louis, United States.

The Mississippi Valley Trust Company Building is a two-story Beaux-Arts structure at 401 Pine Street in Downtown St. Louis, completed in 1896 to designs by the firm Eames & Young. It was built as the home of the Mississippi Valley Trust Company, a local bank that financed transportation and communication networks in the St. Louis region and supported the St. Louis World's Fair.

The building was constructed in 1896 by architects Eames and Young and originally served to finance transportation networks in the region during industrial expansion. This period of economic growth shaped the design and importance of the structure.

The building reflects the importance of financial institutions in shaping downtown St. Louis and shows how commercial spaces have adapted their purposes over time. Visitors can still sense this economic legacy in the carefully preserved architectural details today.

The building currently functions as an office space with ground floor retail and maintains its original architectural features throughout. Its downtown location makes it easy to access and allows visitors to explore the surrounding historic street and neighboring buildings.

The building's later tenant, the coffee shop and cocktail bar Trust, takes its name from the Mississippi Valley Trust Company, the bank that occupied the structure from 1896. The building is also the third stop on the Let's Roam Saint Louis Architectural Scavenger Hunt, a self-guided tour of downtown buildings.