Regions-Harbert Plaza, Office building in downtown Birmingham, Alabama, United States

Regions-Harbert Plaza is a 32-story, 437-foot (133 m) postmodern office tower completed in 1989 to designs by Hellmuth, Obata & Kassabaum, with Brasfield & Gorrie as general contractor. Its base holds a 70,000-square-foot retail center, and a mezzanine passage links it to the adjacent Regions Center.

Designed by Hellmuth, Obata & Kassabaum and built in 1989 by general contractor Brasfield & Gorrie, the tower opened as a multi-tenant office building for Harbert Corporation, which owned it until the Harbert family sold it in 2008. It was renamed on July 13, 2007, when AmSouth Bancorporation, its largest tenant, merged with Birmingham-based Regions Financial Corporation.

The 31st and 32nd floors hold the private City Club of Birmingham, a members' club for the city's business community. The building is named after Birmingham businessman John Murdoch Harbert III, whose Harbert Corporation owned it until 2008. At Christmas, red and green lights are switched on at the top of the tower.

The building stands at 1901 Sixth Avenue North in downtown Birmingham, with its retail base facing the street and a mezzanine link to the adjacent Regions Center. The 31st and 32nd floors hold the private City Club of Birmingham, open to members rather than the public. Visitors should note that the tower is a working office building, not a public attraction.

The base holds a 70,000-square-foot retail center, and its foundation was built to carry an eight-story tower above that retail area. The 31st and 32nd floors hold the private City Club of Birmingham, and a mezzanine links the building to the adjacent Regions Center.