Danish Kings and Queens: 4 kings
King Knud III the Hardy (a.k.a. Knut)   1035-1042  
King Knud IV the Holy (a.k.a. Knut)   1080-1086  
King Knud V Magnussen (a.k.a. Knut)   1146-1157  
King Knud VI (a.k.a. Knut)   1182-1202  
English and British Kings and Queens: 1 king
King Harthacnut (a.k.a. Knut)   1040-1042  
Nobel Prize Winners: 1 literature
(literature) Knut Hamsun   1920  
Norwegian Kings and Queens: 1 king
King Knut the Great   1028-1035  
Olympic Medalists: 2 silver
(silver) Knut Lindberg   1912   4x100 m relay  
(silver) Bertil Linde (a.k.a. Knut)   1928   ice hockey  
Saints: 1 saint
Saint Canute IV of Denmark (a.k.a. Knut)   1040-1086  
Swedish Kings and Queens: 2 kings
King Knut I   1167-1196  
King Knut II the Long   1229-1234  
Swedish Prime Ministers: 1 prime minister
Hjalmar Hammarskjöld (a.k.a. Knut)   1914-1917