Ekaterina Beliaeva
{{short description|Russian diver}}
{{BLP sources|date=November 2020}}
{{Infobox sportsperson
|name = Ekaterina Beliaeva
|full_name = Ekaterina Konstantinovna Beliaeva
|image =
|nationality = Russian
|birth_date = {{birth date and age|2003|6|22|df=y}}
|birth_place =
|height =
|weight =
|country = Russia
|sport = Diving
|event = 10 m synchro
|show-medals = yes
|medaltemplates =
{{Medal|Competition|World Championships}}
{{Medal|Silver|2019 Gwangju|10 m mixed synchro}}
{{MedalCompetition|European Championships}}
{{MedalGold|2019 Kyiv|10 m mixed synchro}}
{{MedalGold|2020 Budapest|Team event}}
{{MedalGold|2020 Budapest|10 m synchro}}
{{MedalSilver|2018 Glasgow|10 m synchro}}
{{MedalSilver|2019 Kyiv|Team event}}
{{MedalBronze|2019 Kyiv|10 m synchro}}
{{MedalBronze|2020 Budapest|10m mixed synchro}}
}}
Ekaterina Konstantinovna Beliaeva ({{langx|ru|Екатерина Константиновна Беляева}}; born 22 June 2003) is a Russian diver.
She won a silver medal in the 10 m synchro platform competition at the 2018 European Aquatics Championships.{{Cite web |url=http://glasgow2018.microplustiming.com/export/TF_GLASGOW2018/TF/pdf/DIVW10MTEAM2----------FNL-000100--_73F%201.0.pdf |title=Final results |access-date=2018-08-13 |archive-url=https://web.archive.org/web/20180807185826/http://glasgow2018.microplustiming.com/export/TF_GLASGOW2018/TF/pdf/DIVW10MTEAM2----------FNL-000100--_73F%201.0.pdf |archive-date=2018-08-07 |url-status=dead }}