In this study, machinability studies of Titanium (Ti) and its alloys construction, under the minimum quantity lubrication (MQL) system has been investigated. Titanium and its alloys, which are made of lightweight metals, are extremely difficult and costly to process. The main purpose of this article is to contribute to the scientific work in this area and assist in the selection of the correct cutting tool, machining operation and cutting parameters during processing of Ti and its alloys. Another aim of the study is to examine the effects of the use of the MQL system in the automotive, aerospace, and space industries on the machinability of Ti and its alloys, which are strategic priorities. In order to reach all these objectives, studies on Ti and their alloys processed with MQL system in the world have been examined and their results have been given.