Aleksandr Konstantinovich Ivanov (; born July 22, 1989) is a Russian weightlifter. Prior to the 2012 London Summer Olympics, his best result was 403 kg (185 snatch + 218 clean and jerk achieved in Antalya 2010).
He originally was awarded the silver medal at the 2012 Summer Olympics in the men's 94 kg category with a total of 409 kg (185 snatch + 224 clean and jerk). On 27 July 2016, the IWF reported that, in the IOC's second wave of doping re-sampling, Ivanov had tested positive for the steroid dehydrochlormethyltestosterone. On 14 September 2016, Ivanov was stripped of his Olympic silver medal.
In 2023 the International Weightlifting Federation annulled his results between 7 March 2012 and 7 February 2022.