Beatriz "Betty" Kretschmer Ries de Buccicardi (born 24 January 1928) is a Chilean sprinter. She competed in the heats only at the 1948 Summer Olympics, running in the women's 100 metres, 200 metres and relay.^[1]

She was the long jump gold medallist and 4 × 100 metres relay silver medallist at the 1951 Pan American Games and returned four years later to win a further bronze medal with the Chilean relay team.^[2] She also placed fourth in the 200 m at the 1951 Games.^[3]

At regional level she had a long-lasting career. Her first medals were two silvers in the 100 m and 200 m at the 1943 South American Championships in Athletics. She gained her first South American title at the 1945 Championships, taking 100 m gold in addition to a 200 m silver.^[4] A triple followed at the 1946 South American Championships, where she topped the field in 100 m, 200 m and the long jump.^[5] Her last successes were at the 1956 South American Championships in Athletics, where she was 200 m champion and 100 m runner-up.^[4]