Mohamed Dzaiddin bin Abdullah (born 16 September 1938) is a retired Malaysian lawyer who served as the third Chief Justice of Malaysia. He had his early education at Sultan Abdul Hamid College (Alor Setar, Kedah). In 1956 he worked as a journalist with The Malay Mail (Kuala Lumpur) and later joined the Royal Malayan Police Force as an Inspector. An avid golfer, Dzaiddin is married to Tengku Toh Puan Noriah and they have two children.