Mohammad al-Mas'ari (Larabci: محمد المسعري‎), ya kasan ce shi fitaccen masanin ilmin lissafi ne kina dan asalin Saudiyya kuma wanda ya saba wa siyasa wanda ya samu mafaka a Ingila a shekarar 1994. Yana gudanar da kwamitin kare hakkin dan Adam (CDLR) kuma mai ba da shawara ne ga Hukumar Kare Hakkin Dan Adam ta Musulunci. A tsakiyar shekara ta 2000, aka dauke shi aiki a matsayin malami daga sashen kimiyyar lissafi na King's College London. Mohammed Al-Masari ya yi nasarar yaki da turawa daga kasar Ingila a shekarar 1996. Al-Massari ya sami digiri na uku a fannin ilimin lissafi da lissafi daga Jami'ar Cologne a shekara ta 1976. Daga baya ya zama farfesa a Jami'ar King Saud. Ya gudu daga Saudi Arabiya a cikin shekarar 1993 kuma ya sami mafaka a Burtaniya. A yayin shari'ar mutanen da ake zargi da hannu a tashin bam din na ofishin jakadancin Amurka a Nairobi, an bayyanawa jama'a cewa wata wayar tauraron dan adam mai lamba-M 22 da wani dan adawa na Saudiyya Saad Al Faqih ya saya, kuma ta ba Mohammed Al Masari a shekarar 1996, don taimakawa a gwagwarmayar tasa ta fitarwa, ya samu kira daga daya daga cikin ‘yan kunar bakin waken na Nairobi kwanaki takwas kafin harin.