Adilbek Sabituly Niyazymbetov (Kazakh: Әділбек Сәбитұлы Ниязымбетов; born 19 May 1989)[1] is an Uzbekistani-born amateur light-heavyweight boxer who competes for Kazakhstan.

At the 2011 World Amateur Boxing Championships he qualified for the Olympics by winning silver.

He beat Jeysson Monroy, Meng Fanlong and Elshod Rasulov but lost the final to Cuban Julio César la Cruz.

At the 2012 Olympics he beat Carlos Góngora from Ecuador, Iranian Ehsan Rouzbahani 13–10, and Ukrainian Oleksandr Gvozdyk 13:13 on countback before losing the final to Russian favorite Egor Mekhontsev 15:15, again on countback.

At the 2016 Summer Olympics, he beat Mikhail Dauhaliavets, Teymur Mammadov and Joshua Buatsi before losing to Julio César La Cruz in the final.