Sir Vincent Henry Penalver Caillard (23 October 1856 – 18 March 1930) was a British intelligence officer, diplomat, financier, industrialist and company director, principally for Vickers.
After being commissioned in the Royal Engineers, in the early 1880s Caillard was engaged in intelligence duties in the Levant region of the eastern Mediterranean. In 1883, he was appointed to a senior position on the Ottoman Public Debt Council in Constantinople, where he lived with his family. After returning to England in 1898 Caillard entered private business, taking up positions as a director in a diversity of companies engaged in areas such as in banking, agricultural development and railways.