Gia Định was a province of South Vietnam surrounding Sài Gòn. It was one of the country's main industrial centers.^[1]

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Gia Định was created in 1832 and split to four smaller provinces in December 1889: Gia Định, Chợ Lớn, Tân An and Tây Ninh.

In 1957 Gia Định contained 6 districts, Gò Vấp, Tân Bình, Hóc Môn, Thủ Đức, Nhà Bè and Bình Chánh.

In 1970, the districts of Quảng Xuyên and Cần Giờ were added. In February 1976, parts of the provinces of Biên Hòa, Bình Dương, Đô Thành Sài Gòn and Hậu Nghĩa were annexed to Gia Định and it was renamed to Sài Gòn-Gia Định. However, on July 2, 1976, it was renamed Hồ Chí Minh City by the Vietnamese communists government.

Former governors of the province include Nguyễn Văn Thành.