Nicola Grupe, also known professionally as Nicola Grupe-Arnoldi, is a German voice actress and dialogue director born in Munich on August 1, 1984. She has been active in the voice acting industry since childhood, beginning her career at the age of ten. She is the daughter of Bodo Grupe, who was the managing director of the Munich-based synchronization studio FFF Grupe, where much of her work has been recorded.

Grupe is primarily known for her extensive work in dubbing Japanese anime series into German. One of her most prominent and long-standing roles is providing the German voice for the character Chibiusa Tsukino, also known as Sailor Chibi Moon, in various installments of the Sailor Moon franchise. This includes the original Sailor Moon R, S, SuperS, and Sailor Stars series, as well as several associated movies. She also voiced the character Tellu in the third season of Pretty Guardian Sailor Moon Crystal. In the same franchise, she has taken on other roles such as Chibi Chibi and Black Lady.

Another significant role in her career is voicing Maike in the Pokémon anime series, a part she played for many years. Her voice can be heard in numerous other anime series, including Jean in Anime Sanjushi (The Three Musketeers), Marie in Nadia: The Secret of Blue Water, Hanna and Fifi in Ojamajo Doremi, and Mariah Wong in Beyblade. Beyond voice acting, she has also taken on responsibilities as a dialogue director, notably for later seasons of the Pokémon anime.