Oleksandr Oleksandrovych Khyzhniak (Ukrainian: Олександр Олександрович Хижняк; born 3 August 1995) is a Ukrainian amateur boxer.

He earned a silver medal at the 2020 Summer Olympics in the middleweight event.

[1] At the 2024 Summer Olympics he won the gold medal in the same event.

[2] He comes from a family of boxers, with his second cousin being Ukrainian-Australian amateur boxer Anatoliy “Nat” Oliynyk.

This biographical article related to a Ukrainian boxer is a stub.