Oglethorpe Square is one of the 22 squares of Savannah, Georgia, United States. It is located in the second row of the city's five rows of squares, on Abercorn Street and East President Street, and was laid out in 1742. It is south of Reynolds Square, west of Columbia Square, north of Colonial Park Cemetery and east of Wright Square. The oldest building on the square is the Owens–Thomas House, at 124 Abercorn Street, which dates 1819.

Upper New Square, as it was originally known, was laid out in 1742 and was later renamed in honor of Georgia founder General James Oglethorpe, although his statue is located in Chippewa Square, to the southwest.

The home of Georgia's first Royal Governor, John Reynolds, was located on the southeastern trust lot (now a parking lot of The Presidents' Quarters Inn) overlooking the square. Reynolds arrived in Savannah on October 29, 1754.

The residences of the Royal Surveyors of Georgia and South Carolina were located on the northeastern trust lots, the site of today's Owens–Thomas House. The Presidents' Quarters Inn, a 16-room historic bed and breakfast, is located in the southeastern trust lot.

The square contains a pedestal honoring Moravian missionaries who arrived at the same time as John Wesley and settled in Savannah from 1735 to 1740, before resettling in Pennsylvania.

A Savannah veterans' group had unsuccessfully proposed erecting a memorial to veterans of World War II in Oglethorpe Square It was instead installed on River Street.

The Unitarian Universalist Church was originally based on the square, prior to its move to the western side of Troup Square, a 0.33 miles (0.53 km) to the southeast.

Namesake	Image	Note
James Oglethorpe		The square is named for General James Oglethorpe (1696–1785), founder of the colony of Georgia. His statue is located in Chippewa Square.

Object	Image	Note
Square sign		The square and one of its signs, 2021

Each building below is in one of the eight blocks around the square composed of four residential "tything" blocks and four civic ("trust") blocks, now known as the Oglethorpe Plan. They are listed with construction years where known.

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  Graham Apartment Building, 210 East State Street
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  216 East State Street
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  Michael Lyons Property, 220–224 East State Street
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  Looking west to the Mary Marshall Houses
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  Mary Marshall Houses, 127–129 Abercorn Street
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  Henry Dickerson Duplex, 201–203 East York Street
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  James Mills House, 205 East York Street
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  Jane Young House, 211 East York Street
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  The rear of the Owens–Thomas House on Lincoln Street
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  Presidents' Quarters Inn, 127–131 Lincoln Street (viewed from East York Street)
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  John Feely Duplex, 217–219 East York Street
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  Charles Landershine House, 221 East York Street
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  Marine Hospital, 115 East York Street
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  Standard Oil Building, 110 East President Street
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  Joseph Sognier Property (1), 133–135 Lincoln Street
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  Joseph Sognier Property (2), 139–141 Lincoln Street