| Principlists fraction | |
| Foundation: | 2008 |
| Dissolution: | 2012 |
| Ideology: | Conservatism |
The Principlists fraction (Persian: فراکسیون اصولگرایان) was the majority parliamentary group that controlled the 8th legislature of the Islamic Republic of Iran. It was estimated to have at least 190 members.
It was a conservative group led by Ali Larijani. In 2009, a group of pro-Ahmadinejad members founded the group named Islamic Revolution fraction, unsuccessfully trying to unseat Larijni as the speaker.
In October 2009, Morteza Agha-Tehrani was nominated to stand against Larijani, but lost 7 to 24. The next year, Shahabedin Sadr was defeated by him with 20 votes to 25.