Biomaterials are synthetic or natural materials intended for a specific function in a biological environment where they are used for the direct, complementary or substitute role of living tissue of the human body. The basic requirement of a material that is implanted into the human body is its bioocompatibility. Biomaterials can generally be divided into metals, polymers, ceramics and composites. Metal materials are used as structural materials for medical devices in field of orthopedic surgery, vascular system and dentistry. Approximately 70% - 80% of the structural materials used as implants are metals. This paper presents the most common metallic biomaterials such as stainless steel, cobalt alloys, titanium and its alloys. The alloys are presented separetely, and for each is shown its chemical composition, mechanical properties, corrosion resistance, biocompatibility and finally the specific application is explained on basis of the previously mentioned properties. In addition, special materials such as Nitinol and precious metal alloys are described. Although metals show some problems as biomaterials, modern technology allows advences in the development of metallic biomaterials. On daily basis it is worked on improving the properties of traditional biometals by alloying with other elements and creating composites with other biomaterials. Beside that, a new biomaterials such as metal glasses and biodegradable metals are being created, which are consideresed as the future of biomedical science.