Kristina Novitskaia (Russia)

Sport: Weightlifting
Event: World Weightlifting Championships 2025

Kristina Novitskaia illegally visited the Autonomous Republic of Crimea in 2022, which is a temporarily occupied territory of Ukraine.

Sources:
link, link, link 

–  Official letter of the Ministry of Youth and Sports of Ukraine and the Weightlifting Federation of Ukraine: 

https://mms.gov.ua/news/ukraina-zaklykaie-vidstoronyty-rosiiskykh-i-biloruskykh-neitralnykh-vazhkoatletiv-vid-uchasti-u-chempionati-svitu