Ludvig Adolph Petersen was a Danish architect, teacher and a founding member and board member of the Architects' Association of Denmark. Ludvig Petersen primarily worked as an architect in Vejle and Aarhus. His parents were Zacharias Petersen, a ship's builder at Holmen in Copenhagen and teacher at the Royal Danish Academy of Fine Arts, and Emilie Sophie Thortsen. His brother was Edvard Petersen, painter and teacher at the Academy of Fine Arts. He married Agnes Theodora Walther, the daughter of Vilhelm Theodor Walther, in 1881 and his son is the botanist and sketch artist . Ludvig Petersen died 10 April 1935 and is buried at Holmens Cemetery in Copenhagen.