Sigvard Oscar Fredrik Bernadotte, Prince Bernadotte, Count of Wisborg (7 June 1907 – 4 February 2002), was a Swedish prince and industrial designer.
He was the second son of King Gustav VI Adolf of Sweden and his first wife, Margaret, Duchess of Scania, a granddaughter of Britain's Queen Victoria.
He was born a Swedish prince and was originally titled Duke of Uppland, but was no longer authorized to use his royal titles from 1934 when he married a commoner.
He was a paternal uncle of King Carl XVI Gustaf of Sweden and a maternal uncle of Queen Margrethe II of Denmark and Queen Anne-Marie of Greece.