Namesakes
Notable Actors and Entertainers:
2 actors
Gertrude Lawrence (middle name Dagmar) 1898-1952 
Dana Wynter (a.k.a. Dagmar) 1931-2011
Olympic Medalists:
2 bronze, 1 gold, 1 gold/bronze/silver, 1 silver
(gold) Dagmar Käsling 1972 4x400 m relay
(bronze) Dagmar Lurz 1980 figure skating
(silver) Dagmar Švubová 1984 cross-country skiing
(bronze) Dagmar Neubauer 1988 4x400 m relay
(gold/bronze/silver) Dagmar Hase 1992; 1996 swimming - 200 m backstroke; swimming - 4x100 m medley relay; swimming - 200 m freestyle; swimming - 400 m freestyle; swimming - 4x200 m freestyle relay; swimming - 800 m freestyle
Other Royalty:
5 princesses, 1 princess/empress consort, 1 princess/queen consort
Maria Feodorovna of Russia (middle name Dagmar) 1853-1866; 1881-1894 Denmark; Russia
Louise, Princess Royal (middle name Dagmar) 1867-1931 United Kingdom
Dagmar of Denmark 1890-1961 Denmark
Caroline-Mathilde of Denmark (middle name Dagmar) 1912-1995 Denmark
Alexandrine-Louise of Denmark (middle name Dagmar) 1914-1962 Denmark
Märtha of Sweden (middle name Dagmar) 1901-1954; 1929-1954 Sweden; Norway
Anne-Marie of Greece (middle name Dagmar) 1946-1964; 1964-1973 Denmark; Greece