| Sivert Andreas Nielsen | |
| Birth Date: | 8 October 1823 |
| Birth Place: | Brønnøy, Norway |
| Death Date: | 18 August 1904 |
| Years Active: | 1895-1897 |
| Party: | Liberal Party |
Sivert Andreas Nielsen (8 October 1823 - 18 August 1904) was a Norwegian politician for the Liberal Party.
He was born in the prestegjeld of Brønnøy.[1]
He was elected to the Norwegian Parliament in 1859. He was not re-elected in 1861, but returned in 1865 to serve twelve more terms. When political parties were introduced in the 1880s, Nielsen joined the Liberal Party.[2] He served four terms as President of the Storting.[3]