Sir Charles Hutton Gregory KCMG (14 October 1817 – 10 January 1898) was an English civil engineer. He was president of the Institution of Civil Engineers between December 1867 and December 1869. Charles was the son of Dr Olinthus Gilbert Gregory, a master of mathematics at the Royal Military Academy, Woolwich. The chair of mathematics at that time was held by Charles Hutton, who acted as Dr. Gregory's patron. It was in Hutton's honour that Charles was named. Gregory was instrumental in furthering the careers of many fellow engineers, e.g.