Vladis-Emmerson Mishelevych Illoy-Ayyet (; born 7 October 1995), commonly known as Emmerson, is a professional football defender who plays for Russian First League club Yenisey Krasnoyarsk. Born in Ukraine, he has represented the Republic of the Congo at senior level.
Illoy-Ayyet is a product of the youth team system of FC Chornomorets. But he never made a debut for FC Chornomorets main-squad team; in February 2015 he signed a contract with FC Karpaty. From March 2015 he played on loan for FC Nyva Ternopil.
On 4 July 2019, Hong Kong Premier League club R&F announced the acquisition for Emmerson on a year-long loan. He left the club in January 2020 and was instead loaned out to Russian club Armavir for the rest of the season. On 15 April 2020, Armavir dropped out of the Russian Football National League due to lack of financing.
On 31 May 2022, Emmerson signed a long-term contract with Russian Premier League club Ural Yekaterinburg. He left Ural by mutual consent on 10 September 2024.
In August 2017 he was called up by Congo national football team for matches of 2018 FIFA World Cup qualification against Ghana.
Illoy-Ayyet was born in Ukraine from a Ukrainian mother and a Congolese father.