28th century BC
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| 3rd millennium BC | 
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The 28th century BC was a century that lasted from the year 2800 BC to 2701 BC.
Events
- c. 2800 BC – 2700 BC: Seated Harp Player, from Keros, Cyclades, is made. It is now at the Metropolitan Museum of Art, New York.
 - 2775 BC – 2650 BC: Second Dynasty wars in Ancient Egypt.
 - c. 2750 BC: Estimated ending of the Cucuteni-Trypillian culture in the region of modern-day Romania, Moldova, and southwestern Ukraine.
 
Inventions, discoveries, introductions
References