The English Springer Spaniel is a breed of gun dog in the Spaniel group traditionally used for flushing and retrieving game. They are descended from the Norfolk or Shropshire Spaniels of the mid-19th century; the breed has diverged into separate show and working lines. It is closely related to the Welsh Springer Spaniel and very closely to the English Cocker Spaniel; less than a century ago, springers and cockers would come from the same litter. The smaller "cockers" were used in woodcock hunting while their larger littermates were used to flush, or "spring", other game birds. In 1902, The Kennel Club recognized the English Springer Spaniel as a distinct breed. They are used as sniffer dogs on a widespread basis.

Closest relatives