A new and distinct variety of peach tree, denominated ‘GulfAtlas’, has a winter chilling requirement estimated at approximately 400 chill units (cu). The tree is medium size, moderately vigorous, and semi-spreading in growth habit. It bears showy, pink flowers, and leaves with reniform glands. Trees of ‘GulfAtlas’ are self-fertile and regularly bear heavy annual crops. Fruit are uniformly firm and have yellow, non-melting flesh. Fruit are nearly round, and uniform with substantially symmetrical shape, and have an attractive approximately 75% red skin. The fruit of ‘GulfAtlas’ typically ripen about 3 weeks after ‘Gulfcrimson’ in midJune at Attapulgus, Ga.