Glennville is a city in southeastern Tattnall County, Georgia, United States. As of the 2020 census, the town had a population of 3,834.

Glennville lies within the coastal plain of Georgia, surrounded by farmland and forest. The Altamaha River is 10 miles (16 km) to the southwest. Less than 2 miles to the east of Glennville, Beards Creek forms the border with Long County; just east of the creek is the edge of Fort Stewart. The nearest major city is Savannah, approximately 50 miles (80 km) east of Glennville. Baxley, Georgia, is 29 miles (47 km) southwest of Glennville.

According to the United States Census Bureau, as of 2020 the city had a total area of 7.13 square miles (18.5 km²), of which 7.05 square miles (18.3 km²) was land and 0.08 square miles (0.21 km²) was water.

As of the 2020 United States census, there were 3,834 people residing in the city; these included 1,477 households and 1,071 families.

The Georgia Department of Corrections provides jobs for hundreds of people within Tattnall County and surrounding counties. Smith State Prison, a close-security facility, is located 2 miles north of Glennville. The facility can house 1000+ inmates at any given time.

The city is known for farming crickets to use as animal feed, as well as for pecans.^[9]

The Journal Sentinel of Tattnall County, with offices in the county seat of Reidsville as well as in Glennville, has been published since 1879.^[10]

Glennville is the principal setting of Eternal Fire, a novel by Georgia-born author Calder Willingham.

• Beards Creek Primitive Baptist Church, 5 miles northeast of town, was established in 1804.
• The Glennwanis Hotel, located in downtown Glennville, was built in 1926. It was added to the National Register of Historic Places in 2003.

• Osjha Anderson, Miss Georgia 1999
• Laura Belle Barnard, missionary, humanitarian, and educator; author of The Biblical Basis of Missions
• Beach Dickerson, Hollywood actor & producer who worked frequently with director Roger Corman
• Jesse Finch, US roster for baseball at 1956 Olympics in Melbourne, Australia
• Mason G. Rhodes, former athlete at Paine College; Rio Olympian and Paralympian in track and field, 2016
• Shannon Sharpe, co-host of ESPN First Take, former co-host of FS1 Undisputed, former football analyst for CBS, former collegiate and professional football player with Savannah State University and the Denver Broncos, Pro Football Hall of Fame Inductee 2011, brother of Sterling Sharpe
• Sterling Sharpe, former collegiate and professional football player with the University of South Carolina and the Green Bay Packers. 2014 College Football Hall of Fame Inductee, brother of Shannon Sharpe
• Cole Swindell, American country music singer–songwriter
• Drew Tarver, actor and comedian; brother of Katelyn Tarver
• Katelyn Tarver, singer, actress, and model; sister of Drew Tarver