The Catalogue This catalogue of Galactic supernova remnants (SNRs) is an updated version of those presented in detail in Green (1984, 1988) and in summary form in Green (1991). The basic parameters of the 182 SNRs included in this (1993 May) version of the catalogue are presented below. Notes on how these parameters are derived from observational data are given in Green (1988). It should be noted that there are serious selection effects which apply to the identification of Galactic SNRs (see Green 1991), so that great care should be taken if these data are used in statistical studies. There are many objects that have been identified as SNRs and are listed in the catalogue, although they have been barely resolved in the available observations, or are faint, and have not been well separated from confusing background or nearby thermal emission. The identification of these objects as SNRs, or at least their parameters remain uncertain (see Green 1988). Revisions Since Green (1991) the following eight SNRs have been added to the catalogue: Three new remnants (G59.5+0.1, G67.7+1.8 and G84+0.5) of the the eleven possible SNRs reported by Taylor, Wallace & Goss (1992). G156.2+5.7, which was first identified from X-ray observations by ROSAT (Pfeffermann, Aschenbach & Predehl 1991). G318.9+0.4, a complex of radio arcs reported by Whiteoak (1990). G322.5−0.1, reported by Whiteoak (1992). […]