Oklahoma Commons, Skyscraper in Oklahoma City, United States

Strata Tower at Oklahoma Commons is a 30-story, 393-foot (120 m) skyscraper in downtown Oklahoma City's central business district, the sixth-tallest building in the city and eleventh-tallest in Oklahoma. It houses the Oklahoma Tax Commission and the Oklahoma State Department of Health.

The tower was built in 1971 as the headquarters for Kerr-McGee Corporation and later passed to several energy companies. A major renovation in 2010 brought the building up to modern standards.

In November 1999 the Oklahoma Chapter of the American Institute of Architects gave the building its 25-Year Award of Excellence, recognising a design that had held up a quarter-century after its 1971 completion. The same chapter named Frankfurt-Short-Bruza Associates its Firm of the Year in 1991.

The tower stands in Oklahoma City's central business district at 35.47030, -97.51470. State agencies including the Oklahoma Tax Commission and the Oklahoma State Department of Health occupy it, so expect security checks and limited public access to upper floors. Government workers have complained that parking and other facilities are not accessible to people with disabilities.

The tower's design earned a 25-Year Award of Excellence from the Oklahoma Chapter of the American Institute of Architects in November 1999, a quarter-century after its 1971 completion. The AIA Central Oklahoma chapter had named Frankfurt-Short-Bruza Associates its Firm of the Year in 1991. The 2010 renovation, its architects and the adjacent buildings were recognized by the AIA in 2012.