Vanja Hedvig Desideria Blomberg (later Webjörn, born 28 January 1929) is a retired Swedish gymnast.

She was part of the Swedish teams that won gold medals at the 1950 World Artistic Gymnastics Championships (all-around) and 1952 Summer Olympics (team portable apparatus).

She was the national all-around champion in 1950 and attended the 1956 Olympics as a coach.

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