57Fe conversion electron MSssbauer spectroscopy has been applied to the characterization of bulk stable and epitaxially stabilized iron silicides, and iron-silicon interfaces. The different Mossbauer parameters and their related physical information are discussed in terms of the local electronic surrounding of the iron nucleus. This technique provides also important and unique information on other systems such as ternary transition metal silicides as well as other silicides where the iron nucleus can be used as an efficient probe.