Vadim Vacarciuc (born 1 October 1972) is a retired weightlifter from Moldova.

He competed in four consecutive Summer Olympics for his native Eastern European country, starting in 1996.

Vacarciuc is best known for winning the silver medal in the men's light-heavyweight division (– 94 kg) at the 2000 European Weightlifting Championships in Sofia, Bulgaria.

He twice carried the flag for Moldova at the opening ceremony of the Summer Olympics: in 1996 and 2000.

On 5 June 2024, Vacarciuc was arrested in La Crosse, Wisconsin, United States, on charges of unauthorized use of another person's identification or document.