HMS Humber was a Humber-class monitor of the Royal Navy. Originally built by Vickers for Brazil as the Javary, she was purchased by the Royal Navy in 1914 on the outbreak of the First World War along with her sister ships Severn and Mersey. Humber took part in operations along the Belgian coast October to November 1914. In March 1915, she was towed to Malta, and arrived off Gallipoli in June. She remained in Egyptian waters until August 1917, when she became a guardship at Akaba, before being sent to Mudros in October 1918 and on to Ismid, Turkey, arriving there on the 12th of November.