GGP Inc. (an initialism of General Growth Properties) was an American commercial real estate company and the second-largest shopping mall operator in the United States.

It was founded by brothers Martin, Matthew and Maurice Bucksbaum in Cedar Rapids, Iowa, in 1954, and was headquartered in Chicago, Illinois, from 2000.

It was subject to the largest real estate bankruptcy in American history at the time of its filing in 2009.

[11] In 1995, co-founder and CEO Martin Bucksbaum died and the company moved its headquarters from Des Moines to Chicago.

[4] The company occupied a historic building on North Wacker Drive designed by architectural firm Graham, Anderson, Probst & White, that was later demolished.

[13] In December 2008, hedge fund manager Bill Ackman disclosed a 25% ownership stake in the company.

[18] The Bucksbaum family's stake in the firm, which was worth $2.5 billion in 2005,[12] had declined in value by a similar amount.

Creditors were paid in full and equity holders made a "substantial" recovery of their investment, both of which are unusual in bankruptcy filings.