Sir Thomas Hoo, KG (ca 1396-1455) was an English nobleman. Thomas inherited the estates of his father as Lord of Hoo. He was made a Knight of the Garter for his service fighting in France. He also held titles as Sheriff of Bedfordshire and Chancellor of France. He was granted the barony of Hastings in 1443, thereby becoming Lord of Hoo and Hastings. Thomas married twice and had four daughters, but no sons. Upon his death in 1455, the barony became extinct.