This paper deal with the study of ten foundation inscription on the ottoman monuments in Tripoli, the inscriptions found in eight monuments such as: Awayseya mosque (940/ 1534), Mahmoudya madrasa (995/ 1587), Tawbah Mosque (1021/ 1612) and  Mahmoud al- sangak Minaret (1295/ 1878).           The foundation inscriptions contains five basic elements, the basmala or invocation to God, a verb indicating what was done, the object of the work, the name of the patron and the date of construction. The paper is comparative and analysis this elements in ottoman foundation inscriptions in Tripoli.