Sir Henry Byam Martin KCB (25 June 1803 – 9 February 1865) was a senior Royal Navy officer, and a watercolour artist.

[1] Educated at the Royal Naval Academy, Martin first went to sea in October 1818.

Martin took part in actions off Tartus, and the capture of Acre on 3 November 1840.

[1] From 1846 to 1847, in command of HMS Grampus, Martin was sent to the Society Islands in the South Pacific to report on the Franco-Tahitian War and investigate the sovereignty claim of Queen Pōmare IV over the Leeward Islands.

[2][3] Martin was promoted to Rear-Admiral in 1854 and was appointed as a Knight Commander of the Order of the Bath for his work during Crimean War in 1855.