Sediq Afghan ( صدیق افغان‎) (born 1958 in Kabul) is an Afghan philosopher and mathematician, currently head of the International Center for Mathematical Philosophy in Kabul, Afghanistan. He is also a political activist.

He had a prominent role in protests in Kabul Jan about Afghanistan- and Islam-related issues, including an anti-American protest in 2003, a hunger strike to protest over beatings of journalists by Afghan security officers in 2006, and another one to protest the 2008 Danish Muhammad cartoons. He completed his preliminary education in Afghanistan and received his doctorate in mathematics from the Moscow University.He is recognized as the Man of the year for 2012 by International Biography Center. The center has also authoritized Mohammad Sediq Afgan to confer the medal to scholars of the world.He has been invited by the Britain-based center and the World Federation Massachusetts of America has invited Sediq Afghan and his team to attend the international conference to be held in US from June 28 to July 3,2013 and from July 3 to July 6 2013.