answers: Michael Phelps
context: by the IOC database. Usually, a single code corresponds to a single National Olympic Committee (NOC). When different codes are displayed for different years, medal counts are combined in the case of a simple change of IOC code (such as from HOL to NED for the Netherlands) or simple change of country name (such as from Ceylon to Sri Lanka). As the medals are attributed to each NOC, not all totals include medals won by athletes from that country for another NOC, such as before independence of that country (see individual footnotes for special cases such as combined teams). Names </s> medal and two improvements of his own world records. 75 races — Emil Zátopek 65 consecutive competitions — Carl Lewis 5 consecutive World Championships 140 to 150 competitions — Iolanda Balaş Note: this streak included 2 Olympic gold medals and 14 improvements of the world record. 5 consecutive gold medals at Olympic games — United States 5 consecutive gold medals at Olympic games — United States 7 consecutive gold medals at Olympic games — United States 4 consecutive gold medals at Olympic games 4 consecutive gold medals at Olympic games — Finland 4 consecutive gold medals at Olympic games — </s> in running. He also set many more unofficial ones for a total of 58. His indoor world records were all unofficial as the IAAF did not ratify indoor records until the 1980s. Nurmi's record for most Olympic gold medals was matched by gymnast Larisa Latynina in 1964, swimmer Mark Spitz in 1972 and fellow track and field athlete Carl Lewis in 1996, and broken by swimmer Michael Phelps in 2008. Nurmi's record for most medals in the Olympic Games stood until Edoardo Mangiarotti won his 13th medal in fencing in 1960. "Time" selected Nurmi as the greatest Olympian of all
question: who has the most gold medals in olympic history