Vadim Zadoinov

Vadim Zadoynov (Вадим Задойнов, born 24 May 1969) is a Moldovan athlete who specialized in the 400 metres hurdles.

Zadoynov was born in Chişinău. He won the bronze medal for the Soviet Union at the 1988 World Junior Championships. At the 1990 European Championships he finished fourth in the 400 m hurdles and eighth in the 4 × 400 m relay. At the 1992 Olympic Games he was knocked out in the heats.

Zadoynov also competed at the World Championships in 1993, 1995, 1997 and 1999, and only reached the semi-final once; in 1997. He was also knocked out in the heats at the Olympic Games in 1996 and 2000. He finished seventh at the 1994 European Championships and fifth at the 1998 European Championships.

Zadoynov's personal best time was 48.61 seconds, achieved at the 1990 European Championships in Split.