Pay Our Military Act of 2018 This bill provides FY2018 appropriations for military pay and death benefits during any period in which interim or full-year appropriations for FY2018 are not in effect. In the event of a government shutdown, the bill provides continuing appropriations for: pay and allowances to members of the Armed Forces, including reserve components, who perform active service (including drill) during the period; payments of death benefits for individuals who die during the period; and pay and allowances to civilian personnel or contractors of the Department of Defense (and the Department of Homeland Security in the case of the Coast Guard) who are providing support to members of the Armed Forces and payments in connection with death benefits. The appropriations provided by this bill are available until the earlier of: (1) the enactment into law of specified appropriations legislation, or (2) September 30, 2018.