Leonie Adam, also known as Leonie Charlotte Adam, is a German voice actor who works in the German dubbing industry for films and television series. She is a trained actress for both stage and screen and is a bilingual speaker of German and English, also fluent in French. Her voice work is described as gentle and youthful with a natural charm.

In anime, Adam is known for providing the German voice of the character Shiro in the series I Was Reincarnated as the 7th Prince So I Can Take My Time Perfecting My Magical Ability. Her performance as Shiro is featured in episodes five, six, seven, and nine through twelve of the series.

Beyond her role in this anime, Adam has voiced a variety of other characters in German-dubbed productions. Her earlier voice roles include a schoolgirl in Mobile Suit Gundam Wing and a girl in Mini-Göttinnen. She also provided voices for characters in films such as Insel der neuen Monster 2, Another Heaven, and School Killer, as well as a mouse and cat in Der Bart des Königs - Rufus' Abenteuer im Spiegelreich. In the 2017 film Blame - Verbotenes Verlangen, she voiced the characters of Lily and Michelle Martinez. One of her later anime roles before The 7th Prince was a student in Senran Kagura.