Gerald D. Hines (born 1925) is the founder and chairman of Hines, a privately held real estate firm with its U.S. headquarters located in Houston, Texas, and its European headquarters located in London.
Born in Gary, Indiana, Gerald Hines moved to Houston in 1948 after graduating with a bachelor in mechanical engineering from Purdue University. He formed an engineering partnership and started a fledgling real estate business on the side, and he formed Gerald D. Hines Interests in 1957. Early Hines projects were warehouses and small office buildings. His first large-scale commercial development came in 1967 when Shell Oil Company hired Hines to construct a new downtown Houston headquarters. The Galleria, Pennzoil Place, Transco Tower (now Williams Tower) and more than 400 other major buildings followed. Today, Hines is one of the largest real estate firms in the world, according to a 2005 report by the Lipsey Company  with operations throughout the U.S. and in 16 other countries. Many of his buildings were designed by well-known architects: I. M. Pei, Philip Johnson, Cesar Pelli, Frank Gehry, and Robert A.M. Stern.
Today, the Hines portfolio of projects underway, completed, acquired and managed for third parties includes more than 1,100 properties representing approximately 454,000,000 square feet (42,200,000 m2) of office, residential, mixed-use, industrial, hotel, medical, retail and sports facilities, as well as large, master-planned communities and land developments. With controlled assets valued at approximately $25.8 billion, Hines is one of the largest real estate organizations in the world, as stated in the press release, “Leading Sustainable Property Owner/Manager Hines Extends "Green Office" Program to It's (sic) 4,000+ Tenants."