Ondrej Kružel (born August 23, 1988) is a Slovak male weightlifter, competing in the +105 kg category and representing Slovakia at international competitions.
He participated in the men's +105 kg event at the 2011 World Weightlifting Championships, and at the 2016 Summer Olympics, finishing in eighteenth position.Kruzel was ordered a two-year suspension from the International Weightlifting Federation for using the doping drostanolone in 2012.