(8 March 1800, Gentofte - 26 March 1856, Copenhagen) was a Danish artist who specialized in flower painting.
In parallel with his studies at the Danish Academy, he became a pupil of Christoffer Wilhelm Eckersberg and also of Cladius Detlev Fritzsch. Specializing in flower painting, Jensen continued his education in Paris under the Flemish flower painting brothers, Gerard and Cornelis van Spaendonck, and at the porcelain factory in Sevres where he learnt the art of miniature flower painting. Taking 17th-century Dutch flower painting as a starting point, he revived the art in Denmark. His floral arrangements often had both a decorative and symbolic value. Danish plants were often accompanied by exotic flowers and fruits, sometimes even birds. He also became head artist at the Danish Procelain Factory. Jensen had an extensive circle of customers and many students, especially women, including Louise of Hesse-Kassel who later married King Christian IX. Since the 1980s, his works have gained wide international recognition. Many are exhibited in Statens Museum for Kunst and in Thorvaldsens Museum.