The National Library of Malta, often known as the Bibliotheca, is a reference library in Republic Square, Valletta, Malta. It was founded by Grand Master Emmanuel de Rohan-Polduc in 1776 out of the collections of the knight Louis Guérin de Tencin. It has been a legal deposit library since 1925, and it has the largest collection of Melitensia along with that of the University of Malta. The library also contains the archives of the Order of St. John, the Università of Mdina and the Università of Valletta.

A research library is a library that contains an in-depth collection of material on one or several subjects. A research library will generally include an in-depth selection of materials on a particular topic or set of topics and contain primary sources as well as secondary sources. Research libraries are established to meet research needs and, as such, are stocked with authentic materials with quality content. Research libraries are typically attached to academic or research institutions that specialize in that topic and serve members of that institution. Large university libraries are considered research libraries, and often contain many specialized branch research libraries. The libraries provide research materials for students and staff of these organizations to use and can also publish and carry literature produced by these institutions and make them available to others. Research libraries could also be accessible to members of the public who wish to gain in-depth knowledge on that particular topic.