| Jan Teichmann | |
| Birth Name: | Jean Théodore Frédéric Teichmann |
| Birth Date: | 1788 8, df=yes |
| Birth Place: | Venlo, Dutch Republic |
| Death Place: | Antwerp, Belgium |
| Nationality: | Belgian |
| Occupation: | politician, engineer |
Jean (Jan) Théodore Frédéric Teichmann (3 August 1788 - 4 June 1867) was a Belgian engineer and politician. He was governor ad interim of the province of Antwerp from 11 October 1833 until 3 August 1834 and governor from 10 November 1845 until 4 April 1862.
Jan Teichmann was ad interim Belgian minister of Interior in 1831. He was a member of the Belgian Parliament from 1832 until 1835 and a Senator in the Belgian Senate from 1847 until 1848.