Greta Andersen (born May 1, 1927) is a Danish swimmer and Olympic champion, later settled in Long Beach, California. She competed at the 1948 Olympic Games in London, where she received a gold medal in 100 m freestyle, and a silver medal in 4 × 100 m freestyle relay.
Greta Andersen set the women's speed records both ways in the English Channel. (From France to England: 11 hours and 1 minute, and from England to France: 13 hours and 10 minutes).
She was the first person to swim the Santa Catalina Channel both ways.
She set a world record in 100 yards in 1949, which was unbeaten until 1956. She set world records in 10 miles and in 25 miles.
She was inducted into the International Swimming Hall of Fame in Fort Lauderdale, Florida in 1969.
- 1927: Great Britain (Laverty, Davies, King, Cooper)
- 1931: Netherlands (Bouwmeester, Vierdag, Den Ouden, Braun)
- 1934: Netherlands (Selbach, Timmermans, Mastenbroek, Den Ouden)
- 1938: Denmark (Riise, Kraft, Ove-Petersen, Hveger)
- 1947: Denmark (Svendsen, Harup, Andersen, Nathansen)
- 1950: Netherlands (Masser, Termeulen, Linssen-Vaessen, Schuhmacher)
- 1954: Hungary (Gyenge, Sebő, Temes, Szőke)
- 1958: Netherlands (Schimmel, Lagerberg, Kraan, Gastelaars)
- 1962: Netherlands (Gastelaars, Lasterie, Terpstra, Tigelaar)
- 1966: Soviet Union (Sipchenko, Rudenko, Ustinova, Sosnova)
- 1970: East Germany (Wetzko, Komar, Sehmisch, Schulze)
- 1974: East Germany (Ender, Franke, Eife, Hübner)
- 1977: East Germany (Treiber, Wächtler, Priemer, Krause)
- 1981: East Germany (Meineke, Metschuck, Diers, Link)
- 1983: East Germany (Otto, Link, Sirch, Meineke)
- 1985: East Germany (Strauss, König, Stellmach, Friedrich)
- 1987: East Germany (Stellmach, Friedrich, Otto, Meißner)
- 1989: East Germany (Meißner, Stellmach, Hunger, Friedrich)
- 1991: Netherlands (Van der Plaats, De Bruijn, Mastenbroek, Brienesse)
- 1993: Germany (Van Almsick, Kielgass, Stellmach, Hunger)
- 1995: Germany (Van Almsick, Osygus, Kielgass, Hunger)
- 1997: Germany (Meißner, Osygus, Buschschulte, Völker)
- 1999: Germany (Meißner, Buschschulte, Van Almsick, Völker)
- 2000: Sweden (Jöhncke, Sjöberg, Kammerling, Alshammar)
- 2002: Germany (Meißner, Dallmann, Völker, Van Almsick)
- 2004: France (Figuès, Couderc, Mongel, Metella)
- 2006: Germany (Dallmann, Götz, Steffen, Liebs)
- 2008: Netherlands (Dekker, Kromowidjojo, Heemskerk, Veldhuis)
- 2010: Germany (Samulski, Lippok, Vitting, Schreiber)
- 2012: Germany (Steffen, Lippok, Vitting, Schreiber)