Port Wentworth is a city in Chatham County, Georgia, United States. The population was 5,359 at the 2010 census, with an estimated population of 8,518 in 2018. It is part of the Savannah Metropolitan Statistical Area.
The Georgia General Assembly incorporated Port Wentworth in 1957.
On February 7, 2008, an explosion at the historic Dixie Crystals sugar plant, established in 1916 on Oxnard Drive, killed 14 people and injured at least 40 others. The victims ranged in age from 18 to 56. The blast could be heard as far away as Levy, South Carolina, where it shook house walls. The accident brought Port Wentworth national and international notice; it was widely reported in European and Asian media.
Port Wentworth is located in the northern corner of Chatham County at 32°09′52″N 81°10′48″W. It is bordered by Effingham County to the north, by Garden City to the southeast, and by the Savannah city limits (surrounding Savannah-Hilton Head International Airport) to the southwest. Within the Port Wentworth city limits are the localities of Meinhard and Monteith.