Charles Cornwallis, 1st Marquess Cornwallis (1738-1805), British general during the American Revolution, and governor-general of India

William Cornwallis (1744-1819), a British admiral during the Napoleonic Wars

Dauan Island, formerly known as Cornwallis Island - See List of Torres Strait Islands

Frederick Cornwallis (1713-1783), Archbishop of Canterbury

Edward Cornwallis (1713-1766), British colonialist and founder of Halifax, Canada

Little Cornwallis Island, Nunavut, Canada

George Cornwallis-West, stepfather of Winston Churchill

Cornwallis, Manitoba (rural municipality), Canada

Cornwallis Island, Nunavut, Canada

William Cornwallis Symonds, a British officer in New Zealand

Charles Cornwallis, 3rd Baron Cornwallis (1655-1698), who served as First Lord of the Admiralty

Cornwallis Junior High School in Halifax, named for Edward Cornwallis

Sir William Cornwallis, a British essayist

Lord Cornwallis is the name that many Americans know for Charles Cornwallis, 1st Marquess Cornwallis, the commander of the British forces at the Battle of Camden, the Battle of Guilford Courthouse and the Siege of Yorktown.

Thomas Cornwallis (1605-1675) - one of the first commissioners of the Province of Maryland (brother of Sir William)

Cornwallis, a briefly seen character who is a child of Mr. Hanky on the television show South Park.

HMS Cornwallis, a number of ships of the Royal Navy