Lavinia Agache (later Carney; born 11 February 1968) is a retired Romanian artistic gymnast.

She was then coached by Béla and Márta Károlyi before their defection to the United States, and later by Octavian Bellu, Adrian Goreac and Maria Cosma.

In 1981, thirteen year old Agache was entered to compete in the International Gymnastics Classic in Los Angeles under the name Ekaterina Szabo.

The reason for the deception is unclear because Agache could have competed under her own name if Romanian gymnastics officials had simply entered her into the competition.

This was a disappointing medal toll for Agache, however, as she had the opportunity to win medals on every event and in the all-around after winning the compulsory round of team competition, but suffered falls on three of the four events during the optional rounds (bars, beam, and floor).