Dana Geissler is a German actress and voice artist known for her work in film, television, and anime dubbing. She was born in Munich, Germany, on July 8, 1963. Geissler completed her acting training at the Max Reinhardt Seminar in Vienna, a prestigious institution with connections to her family's artistic legacy. Following her education, she performed on stage at venues including the Salzburg Festival and the Frankfurt Volkstheater. Her on-screen career includes a leading role as police chief Nina Kaiser in the RTL crime series Die Wache, as well as appearances in series such as Um Himmels Willen, Der letzte Bulle, and SOKO Köln. She also demonstrated her comedic abilities in the SAT.1 series Mircomania, which received the Silver Rose of Montreux award.

As a voice actress, Geissler has contributed German dubbing voices to numerous anime series and films. One of her prominent roles is Boa Marigold, one of the three Gorgon sisters and a warrior of the Kuja Pirates, in the long-running series One Piece. In the series Deadman Wonderland, she provided the voice for Makina, a high-ranking official within the secretive prison facility. Geissler also voiced Marie Inuyashiki in Inuyashiki Last Hero, the mother of the protagonist's family in the sci-fi drama.

Beyond her anime work, Geissler is active as an audiobook narrator and has recorded over one hundred titles. She also works as a coach and seminar leader, specializing in body language, voice, and presentation skills for business professionals. She resides in Munich.