Answer
The answer is Marie-Louise Coleiro Preca, KUOM, where KUOM stands for "Kumpann tal-Ordni tal-Mertu tal-Unur Nazzjonali Malti," or Companion of the National Order of Merit, which is an honorary title bestowed upon individuals who have made significant contributions to Maltese society. She is primarily known by her professional title Madam President of Malta during her tenure (2014-2019).