Sibghatullah Mojaddedi (Pashto: صبغت الله مجددي; Dari: صبغت‌الله مجددی; 27 September 1926[1] – 11 February 2019)[2] was an Afghan politician, who served as Acting President after the fall of Mohammad Najibullah's government in April 1992.

In 2005, he was appointed chairman of the Meshrano Jirga, upper house of the National Assembly of Afghanistan, and was reappointed as a member in 2011.

In 1952 he returned to Afghanistan to teach in high schools and at Kabul University, where he became known as an advocate of Afghan political independence.

[5] It is believed his leftist brother, Rahmatullah Mojaddedi, passed information to Babrak Karmal and in turn to the Daoud government that Sibghatullah planned to blow up a bridge in Kabul targeting the Soviet delegation's motorcade in a visit.

[15] In April 1992, he was elected the chair of the Islamic Jihad Council that was set up to establish a post-Soviet Afghan government.

[3] He entered Kabul on 28 April amid a large crowd and assumed the new Islamic republic, and offered a general amnesty to all Afghans except the deposed President, Mohammad Najibullah, whose fate would be decided by "the public".

His election was supported by all mujahideen guerilla factions except the Hezb-e Islami Gulbuddin, whose forces started firing rockets at the capital; violent clashes took place between them and soldiers of the new coalition near the Interior Ministry building.

[19] Amnesty International said that Mojaddedi and the jirga's leadership curtrailed freedom of speech at the assembly,[20] including refusing to launch a vote on changing "Islamic Republic of Afghanistan" to "Republic of Afghanistan" despite getting enough signatures, publicly calling the delegates who signed it "unbelievers" and "apostates".

[26] He was subsequently reported to have been present at a ceremony commemorating the 27th anniversary of the Soviet withdrawal from Afghanistan on 15 February 2016.