- 2000 — "Landscapes of Florence", Florence, Italy.
- 2015 — International Triennial of Graphics. Union of Artists of Ukraine, Kyiv, Ukraine.
- 2015 — "Worlds. Views. Travels". Personal exhibition in the gallery "Green Sofa", Lviv, Ukraine.
- 2015 — "Pilgrims". Parsuna Gallery, Kyiv, Ukraine.
- 2015 — "Magical Worlds". Gallery "Victory Gardens", Odesa, Ukraine.
- 2016 — "Romantic landscape". National Historical and Cultural Reserve "Kachanivka", Kachanivka village, Chernihiv region, Ukraine.
- 2016 — "25 years of independence". National Union of Artists of Ukraine, Kyiv, Ukraine.
- 2016 — Exhibition at the Parsuna Gallery. Kyiv, Ukraine.
- 2016 — "Winter Garden", Museum of Ukrainian Painting, Dnipro, Ukraine.
- 2016 — "Red Line", Museum of Spiritual Treasures, Kyiv, Ukraine.
- 2016 — "Lines of Life". Gallery "Triptych Art", Kyiv, Ukraine.
- 2016 — "The Joys of Life". Menorah Gallery, Dnipro, Ukraine.
- 2016 — "Cossack tales". Museum of Hetmanate, Kyiv, Ukraine.
- 2017 — "Fixing the Imaginary", Taras Shevchenko Museum, Kyiv, Ukraine.
- 2017 — "Meeting". Gallery "Green Sofa", Lviv, Ukraine.
- 2017 — "All roads lead to the sea". Museum of Western and Eastern Art, Odesa, Ukraine.
- 2017 — "Oleksii Koval: Enamels. History. Ukraine. World", National Museum named after A. Sheptytsky, Lviv, Ukraine
- 2017 — "Ukrainian Portrait", KUMF Gallery, Toronto, Canada.
- 2018 — "Places of Power", Triptych Art Gallery, Kyiv, Ukraine.
- 2018 — "Oleksii Koval: Enamels. History. Ukraine. World", Ternopil Regional Art Museum, Ternopil, Ukraine.
- 2018 — "Oleksii Koval: Enamels. History. Ukraine. World", Museum of Arts of the Carpathian region, Ivano-Frankivsk, Ukraine.
- 2018 — "Oleksii Koval: Enamels. History. Ukraine. World", Khmelnytsky Regional Art Museum, Khmelnytsky, Ukraine.
- 2018 — "Oleksii Koval: Enamels. History. Ukraine. World", Chernivtsi Art Museum, Chernivtsi, Ukraine.
- 2018 — exhibition in Ukrainian National Museum, Chicago, USA.
- 2019 — "Earth and Sky". Enamels. Gallery "Green Sofa", Lviv, Ukraine.
- 2019 — "The Language of Enamel", National Conservation Area "St. Sophia of Kyiv", Kyiv, Ukraine
- 2019 — "Around", Triptych Art Gallery, Kyiv, Ukraine.
- 2019 — "From the past to the future", Museum of Folk Architecture and Life "Pirogiv", Kyiv, Ukraine.
- 2019-2020 — "The Language of Enamel", Beyolu Gallery, Istanbul, Turkey.
- 2020 — "From the Past to the Future", Ukrainian Archive Museum, Cleveland, USA.
- 2020 — "Live Earth", gallery "Portal 11", Kyiv, Ukraine.
- 2021 — "On the Dream Islands", Triptych Art Gallery, Kyiv, Ukraine.
- 2021 — "Dialogue with Kyivans", National Museum of Decorative Arts. Kyiv. Ukraine.
- 2022 — "Buds and Cathedrals", Ellington-White Contemporary Gallery. Fayettewille. USA.
- 2023 — "Language Of Enamel", The Priscilla R. Tyson Cultural Arts Center. Columbus. USA
- 2023 — "The Island Sunrise", TAAC Gallery. Nolan Park. Governors Island. NYC. USA.
- 2024 — "Above the Sea", Llotja School Art Centre. Barcelona. Spain
- 2024 — "The ABC of Enamel", Fisher Gallery at Otterbein University. Westerville. OH. USA.
- 2024 — "Smalti Monumentali", Artchivio enamel museum. Bergamo. Italy.