The Mongenast Ministry was only in office in Luxembourg for 25 days, from 12 October to 6 November 1915.
- Mathias Mongenast: Director-General of Finances, acting President of the Council
- Victor Thorn: Director-General for Justice and Public Works
- Ernest Leclère: Director-General for the Interior
- Thewes, Guy (2011). Les gouvernements du Grand-Duché de Luxembourg depuis 1848 (PDF) (in French). Service Information et Presse. pp. 64–65. ISBN 978-2-87999-212-9.