George Peacock (1791–1858) was an English mathematician and Anglican cleric.

George Peacock may also refer to:

• George Peacock (captain) (1805–1883), English sea captain and shipowner
• George Peacock (manufacturer) (1824–1900), Australian businessman
• George Peacock (footballer) (1881–1943), Australian rules footballer
• George Peacock (luthier) (1942–2011), American luthier
• George Edwards Peacock, Australian colonial artist

• Peacock (disambiguation)
• George Peacocke (1821–1879), British politician