Islamic knowledge is gathered through the understanding the Al-Quran. It requires ontology
which can capture the knowledge and present it in a machine readable structured. However,
current ontology approaches is irrelevant and inaccuracy in producing true concepts of
Al-Quran knowledge, because it used traditional methods that only define the concepts of
knowledge without connecting to a related theme of knowledge. The themes of knowledge are
important to provide true meaning and explanation of Al-Quran knowledge classification. The
main aims of this paper are to demonstrate the development of ontology Al-Quran and method
used for searching the Al-Quran knowledge using the semantic search approach. Expert
review has been applied to validate the ontology model and evaluate the relevance and
precision of searching results.