The philological study of Arabic manuscripts in Ethiopia in general and the collecting and cataloguing of Arabic manuscripts in particular has been neglected, though some foreign and local scholars have tried to fill the gap. The main aim of this research is to give an insight about some of the manuscripts in the custody of Dr. Jeylan Kedir by cataloguing and describing some selected Arabic mss in his private collection. The study also includes the biography of the owner of the collection who has had a significant role in collecting the Arabic manuscripts, now about 125. The researcher catalogued only 18 Arabic manuscripts.