Nelson may refer to a number of people, places and things (many derived from Horatio Nelson, 1st Viscount Nelson, better known as Lord Nelson, an English admiral famous for his participation in the Napoleonic Wars):

Nelson, New Zealand

Nelson, British Columbia

Nelson, New Hampshire

USS Nelson (DD-623), an American Gleaves-class destroyer

Nelson County, Virginia

Nelson, Lancashire, in England

Nelson County, Kentucky

Thomas Nelson (publisher)

Nelson F.C., a football club based in Nelson, Lancashire

HMS Nelson (1927), a battleship

HMNB Portsmouth, a naval base formed partly by a stone frigate called HMS Nelson

Nelson Township, Minnesota

Nelson (surname)

Nelson Park Township, Minnesota

HMS Lord Nelson (1906), a battleship

Nelson County, North Dakota

Nelson hold, a type of grappling and wrestling hold

Nelson, New York

Nelson, Georgia

Nelson rules, a methodology in control theory

Nelson High School, in Burlington, Ontario

Nelson Township, Michigan

Nelson (band)

Nelson, Illinois

Nelson, Nebraska

Nelson, Wisconsin

Nelson, Caerphilly, in Wales

Nelson Township, Pennsylvania

Nelson (given name)

Nelson River

Nelson Lagoon, Alaska

Nelson, Missouri

Nelson, Minnesota

Nelson's syndrome, an endocrine disorder

Nelson Lakes National Park

HMS Nelson (1881), an armoured cruiser

Nelson, Victoria

Nelson College, a secondary school in Nelson, New Zealand

Nelson (cricket), a term in the sport of cricket

Nelson, New South Wales

HMS Nelson (1814), a first rate

Nelson (automobile)

Nelson Mandela (politician)