Ludwig Karl Martin Leonhard Albrecht Kossel (September 16, 1853 - July 5, 1927), German medical doctor.

Kossel was born in Rostock as the son of Prussian consul Albrecht Kossel and his wife Clara. In 1872, Kossel went to the University of Strassburg to study medicine, where he visited lectures of Anton de Bary, Waldeyer, Kundt, Baeyer and Felix Hoppe-Seyler . He graduated in 1878 at the University of Rostock.

Kossel was awarded the 1910 Nobel Prize in Physiology or Medicine for research in cell biology, especially proteins and nucleic acids.

Selected Works

• Untersuchungen über die Nukleine und ihre Spaltungsprodukte (Investigations into the nucleins and their cleavage products), 1881
• Die Gewebe des menschlichen Körpers und ihre mikroskopische Untersuchung (The tissues in the human body and their microscopic investigation), 1889-1891
• Leitfaden für medizinisch-chemische Kurse (Textbook for medical-chemical courses), 1888
• Die Probleme der Biochemie (The problems of biochemistry), 1908
• Die Beziehungen der Chemie zur Physiologie (The relationships between chemistry and physiology), 1913