To determine the potential of graphene in lightweight ballistic protection, open source information has been collated and analysed. The study concludes there is an active interest in investigating graphene-modified materials and technologies for ballistic protection. On-going studies are mainly done by academic organisations in Europe, USA and Brazil, but some work is done by defence organisations in the USA, UK, Portugal and Spain. Commercial activities are on-going but are very limited in scope. All the main types of materials used in ballistic protection: fibres, ceramics, adhesives, polymers, and epoxy are being studied, and some small-scale ballistic tests have been done on composite panels. Modelling studies on microscopic samples are being made. An attempt to model both material properties and macroscopic mechanical properties has also been made. To date results show improvements in material properties such as strength and toughness, and increased ballistic limit (V50) when graphene is integrated in the materials tested. Graphene has been mainly used as an additive to modify the properties of a polymer matrix used to produce a composite panel. It is possible that other properties of graphene (e.g. permeability, thermal conductivity, surface properties, chemical stability) could contribute to improved ballistic protection by increasing comfort and robustness. However this aspect has not been studied, since these parameters do not directly contribute to protection. It is recommended that the field of graphene-modified materials and associated technologies is actively monitored because it is likely that the field will progress more rapidly than would be expected. These advances are driven by civil investment. It is also recommended that if possible small-scale ballistic tests be performed, to independently verify some of the improvements reported. It seems likely that materials are available for this purpose, from FOI's contacts.