| Sayyid Abdul-Karim Mousavi Ardebili | |
| Birth Date: | 28 January 1926 |
| Birth Place: | Ardabil, Iran |
| Death Place: | Tehran, Iran |
| Order: | Chief Justice of Iran Head of Supreme Court of Iran |
| Appointer: | Ruhollah Khomeini |
| Term Start: | 28 June 1981 |
| Term End: | 15 August 1989 |
| Predecessor: | Mohammad Beheshti |
| Successor: | Mohammad Yazdi |
| Order1: | Attorney-General of Iran |
| Term Start1: | 23 February 1980 |
| Term End1: | 28 June 1981 |
| Appointer1: | Ruhollah Khomeini |
| Predecessor1: | Fathollah Banisadr |
| Successor1: | Mohammad-Mehdi Rabbani Amlashi |
| Order2: | Member of the Assembly of Experts |
| Term Start2: | 15 August 1983 |
| Term End2: | 1 December 1991 |
| Constituency2: | Tehran Province |
| Party: | Assembly of Qom Seminary Scholars and Researchers |
| Otherparty: | Islamic Republican Party |
| Alma Mater: | Qom Seminary |
| Nationality: | Iranian |
| Website: | Official website |
| Native Name Lang: | fa |
Sayyid Abdolkarim Mousavi Ardebili (Persian: سید عبدالکریم موسوی اردبیلی, 28 January 1926 – 23 November 2016) was an Iranian reformist politician and Twelver shi'a marja.
Ardebili was a supporter of Ayatollah Ruhollah Khomeini and was a friend of his. He made speeches in support of Khomeini in the 1970s. After the Iranian Revolution, he became a founding member of the Islamic Republican Party that was founded in 1979.[1] Khomeini appointed him as chief of justice in 1981 after the impeachment of President Abulhassan Banisadr. As chief justice, he served as a member of the temporary council of the Presidency, along with the Prime Minister and Speaker, carrying out the duties of the president for up to two months.[2]