Henry Stacy Marks (13 September 1829 – 9 January 1898) was a British artist who took a particular interest in Shakespearean and medieval themes in his early career and later in decorative art depicting birds and ornithologists as well as landscapes. Most of his early works were oils but he also worked on murals and with watercolours. He was a founding member of the St John's Wood Clique and was well known for his humorous performances.
