| Nadja Pieren | |
| Birth Name: | Nadja Pieren |
| Office: | Member of the National Council (Switzerland) |
| Termstart: | 5 December 2011 |
| Birth Place: | Bern, Switzerland |
| Birth Date: | 14 February 1980 |
| Office2: | Member of the Grand Council of Bern |
| Termstart2: | 2010 |
| Termend2: | 2011 |
| Occupation: | Businesswoman, politician |
| Website: | (in German) |
Nadja Umbricht stylized Umbricht-Pieren[1] (née Pieren; born 14 February 1980) is a Swiss businesswoman and politician. She currently serves as a member of the National Council (Switzerland) for the Swiss People's Party since 2011.[2] Since 2010, she also served as vice president of the Swiss People's Party on the federal level resigning in 2016.[3] Pieren previously served on the Grand Council of Bern from 2010 to 2011 and as member of the municipal council of Burgdorf.[4] [5]