| Fullname: | Waldo Ariel Kantor |
| Birth Date: | 11 January 1960 |
| Birth Place: | Buenos Aires, Argentina |
| Height: | 1.780NaN0 |
| Weight: | 93kg (205lb) |
| Position: | Setter |
| Teamnumber: | 1 (national team) |
| Nationalyears: | 1981–1990 |
Waldo Ariel Kantor (born 11 January 1960) is a retired volleyball player from Argentina, who represented his native country at the 1984 Summer Olympics in Los Angeles, California and the 1988 Summer Olympics in Seoul. In Seoul, Kantor won the bronze medal with the men's national team.He started played soccer at All Boys, and then decided to play volleyball at IL Peretz from Villa Lynch.
With Ferro Carril Oeste, Kantor won the Morgan Cup of 1979, and the national championships of 1980 and 1981. Kantor received two Konex Awards volleyball merit diplomas (1990 and 2000).
After retirement, Kantor became a successful coach with Argentine first division Bolivar Buenos Aires, winning the 2007–08 championship. He also played at Mendele from Loma Hermosa, where he defeated different teams from the area, such as Villa Piagio, Los Matreros, and River.
| Club | Country | From | To | |
| Club I.L. Peretz Villa Lynch | 1974–1975 | 1977–1978 | ||
| Ferro Carril Oeste | 1978–1979 | 1981–1982 | ||
| Sienne | 1982–1983 | 1982–1983 | ||
| Jesi | 1983–1984 | 1984–1985 | ||
| Pallavolo Catania | 1985–1986 | 1985–1986 | ||
| Córdoba | 1986–1987 | 1986–1987 | ||
| Pallavolo Catania | 1987–1988 | 1989–1990 | ||
| Pallavolo Modena | 1990–1991 | 1992–1993 | ||
| Montpellier UC Volley-Ball | 1993–1994 | 1993–1994 | ||
| Banespa/São Paulo | 1994–1995 | 1994–1995 | ||
| Mendele | Loma Hermosa | 1995–1996 | 1995–1996 | |
| Paris Volley | 1996–1997 | 1996–1997 |