This paper presents a critical edition of Mordecai Qazaz's poem Adam oglu 'Man's son' written in Crimean Karaim probably at the end of the 18th century. It was published in 1841 under another title by Jacob Firkovich who did not provide the name of its author. This publication has not yet been examined. It is only now that we can identify it with Adam oglu. In the present edition, the text is edited on the basis of four manuscripts and the printed edition. Attempt was made to established the basic form of the poem and discuss language features.