| Sadegh Sadegh | |
| Term Start1: | 15 November 1909 |
| Term End1: | 4 July 1910 |
| Successor1: | Mohammad-Ali Foroughi |
| Office2: | Speaker of the 1st Constituent Assembly |
| Term Start2: | 6 December 1925 |
| Term End2: | 13 December 1925 |
| Term Start3: | 22 January 1950 |
| Term End3: | 7 December 1952 |
| Constituency3: | Azerbaijan |
| Term Start4: | 15 November 1909 |
| Term End4: | 25 December 1911 |
| Term Start5: | 7 October 1906 |
| Term End5: | 23 June 1908 |
| Constituency5: | Tabriz |
| Term Start6: | 30 April 1924 |
| Term End6: | 8 August 1925 |
| Primeminister6: | Reza Khan |
| Term Start7: | 1931 |
| Term End7: | 1936 |
| Monarch7: | Reza Shah Pahlavi |
| Death Date: | 7 December 1952 |
| Party: | Democrat[1] |
Sadegh Sadegh (Persian: صادق صادق), also known by the inherited bestowed title Mostashar al-Dowleh (Persian: مستشارالدوله), was an Iranian diplomat and constitutionalist politician.