A monitoring and safety device for sport articles, said device comprising a rigid body within which is contained a radio transmitting circuit for short-distance communication, a data processing unit electrically connected to said radio transmitting circuit , a mobile telephony stage associated with said radio transmitting circuit , and a source of electric power configured for feeding at least said radio transmitting circuit and said data processing unit ; said rigid body being suitable for being installed in substantial inclusion within a structure of a sport article (200; 300); said radio transmitting circuit emitting a positional radio signal indicating a position of the sport article (200; 300) wherein said rigid body is introduced; wherein said data processing unit is configured for using said radio transmitting circuit for short-distance communication as primary circuit able to transmit a radio signal on one or more predefined frequencies susceptible of being received at a short distance, and for using said mobile telephony stage as secondary circuit able to send said positional radio signal of said device, wherein said monitoring and safety device for sport articles comprises a satellite positioning signal receiver stage , contained within said rigid body, and an antenna , external to said rigid body, said radio transmitting circuit operating in association with said satellite positioning signal receiver stage , wherein said radiofrequency circuit for short-distance communication transmits said positional radio signal in beacon mode by means of a high frequency radio transmission with a predefined message comprising a fixed identification code and a position signal obtained from said satellite positioning signal receiver stage , wherein said monitoring and safety device comprises an acceleration sensor means and a memory which are electrically connected with said data processing unit , the accelerometric data from said acceleration sensor means being stored in said memory by said data processing unit cyclically or when said monitoring and safety device receives a command of request of emitting said positioning radio signal, and wherein said data processing unit is configured for allowing said monitoring and safety device to dialogue with a portable user device for the transceiving of management and monitoring data relating to the use of said sport article. wherein said monitoring and safety device for sport articles comprises a satellite positioning signal receiver stage , contained within said rigid body, and an antenna , external to said rigid body, said radio transmitting circuit operating in association with said satellite positioning signal receiver stage , wherein said radiofrequency circuit for short-distance communication transmits said positional radio signal in beacon mode by means of a high frequency radio transmission with a predefined message comprising a fixed identification code and a position signal obtained from said satellite positioning signal receiver stage , wherein said monitoring and safety device comprises an acceleration sensor means and a memory which are electrically connected with said data processing unit , the accelerometric data from said acceleration sensor means being stored in said memory by said data processing unit cyclically or when said monitoring and safety device receives a command of request of emitting said positioning radio signal, and wherein said data processing unit is configured for allowing said monitoring and safety device to dialogue with a portable user device for the transceiving of management and monitoring data relating to the use of said sport article. <EOS>