Ikhtiyar ma'rifat al-rijal

Ikhtiyār maʿrifat al-rijāl
AuthorMuhammad ibn Umar al-Kashshi (c. 854–941/951)
LanguageArabic
Subjectearly Shi'ite hadith transmitters
Genrebiographical evaluation (ʿilm al-rijāl)
One of the four main Shi'ite rijāl works.

Ikhtiyār maʿrifat al-rijāl (Arabic: اختیار معرفة الرجال), also known as the Rijāl al-Kashshī (Arabic: رجال الکَشّي), is a Twelver Shi'ite work of biographical evaluation (ʿilm al-rijāl) originally written by Muhammad ibn Umar al-Kashshi (c. 854–941/951) and abridged by Shaykh Tusi (995–1067 CE).

Al-Kashshi's original work is now lost. The reason given by Tusi to abridge al-Kashshi's work is that it contained many errors. The abridged work as extant today contains 1115 hadiths and refers to 515 companions of the Shi'ite Imams.

It is one of the four books of Shi'ite biographical evaluation which are regarded as authoritative in Twelver Shi'ism.