Christian Augustus Siebe (1788 – 1872) known by his middle name Augustus, was a British engineer known for his contributions to diving equipment, and the company that carried his name: Siebe Gorman ‘Submarine Engineers’, founded by him and his son-in-law, William Augustus Gorman.

Siebe won many medals at the Great Exhibition in 1851, and the Paris Exhibition in 1855.

Siebe Gorman and Company Limited 1819 – 1999: https://collection.sciencemuseumgroup.org.uk/people/cp117443/siebe-gorman-and-company-limited

Painting of Christian Augustus Siebe, by Ernst August Becker (fl. 1840-1859), London, England, 1859. Science Museum London: Object Number: 1872-151.