Déborah Lassource (born 29 September 1999) is a French female handballer for Borussia Dortmund Handball and the French national team as a left back and centre back.

[1] She represented France at the 2022 European Women's Handball Championship in Slovenia, Montenegro and North Macedonia.

[2][3] She is the younger sister of Coralie Lassource, who plays for Brest Bretagne Handball.

[4] They used to play together at Issy Paris Hand.

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