The aim of this paper is to describe a technique for identifying the sourcesof several types of syntactic ambiguity in Arabic Sentences with a singleparse only. Normally, any sentence with two or more structuralrepresentations is said to be syntactically ambiguous. However, Arabicsentences with only one structural representation may be ambiguous. Ourtechnique for identifying Syntactic Ambiguity in Single-Parse ArabicSentences (SASPAS) analyzes each sentence and verifies the conditionsthat govern the existence of certain types of syntactic ambiguities in Arabicsentences. SASPAS is integrated with the syntactic parser, which is basedon Definite Clause Grammar (DCG) formalism. The system accepts Arabicsentences in their original script.