1400 Smith Street (formerly Enron Complex) is a 691 ft (211 m) tall skyscraper located in downtown Houston, Texas, United States.

Designed by architectural firm Lloyd Jones Brewer and Associates, the building was completed in 1983.

[3] The building was the former headquarters of Enron, one of America's largest commodities trading companies during the 1990s and later infamous for its financial scandal in 2001.

1400 Smith Street was originally known as Four Allen Center prior to Enron relocating to Houston in 1985.

At the same time, Brookfield announced that Chevron USA signed a lease for the entire building.