This research intends to analyze Iranian Engineering Scientific Outputs during 1990-2008 in the Dialog Database. Dialog is a collection of more than 900 databases that covers also the ISI Science Citation index as SciSearch since 1990. This research has been done by scintometrics method and citation analysis. The number of documents indexed by Iranian writers in Science Citation Index has been 8396. Growth of Scientific outputs in the field of engineering during this period is 24 percent. Kaveh is the most productive author with 82 documents and ASTM is the highest cited author with 120 citations. The highest volume of documents indexed in the dialog related to Chemical Engineering and Electrical Engineering subject categories respectively. Iranian Journal of Chemistry & Chemical Engineering with 348 documents has released the highest number of productions. Among universities and research institutes, Sharif University of Technology has the highest scientific outputs in this area. Articles have the highest percentage of documents published in ISI journal by 97/24 percent and English with 99/8 percent is the main language of the published documents. The highest rate of participation of Iranian writers for publishing documents is with U. S. and Canada respectively.