A system for managing the dispensing of fuel from a refuelling station to a tank, in particular of a vehicle, the system comprising: a fuel dispenser which comprises a dispensing organ for engaging a mouth of the tank, a housing for inserting the dispensing organ, and an electronic head; the system further comprising second detection means for detecting whether the dispensing organ engages or disengages the mouth; memory means, which are associated with the tank, and in particular are mountable on the vehicle, and which are configured to store identification data of the tank, and in particular of the vehicle; a data acquisition system configured for acquiring the engagement/disengagement status of the dispensing organ in/from the mouth and for acquiring the identification data when the second detection means detect that the dispensing organ engages the mouth; a database of identification data of a plurality of authorised tanks; and a control unit, which is configured to query the database such that it receives an authorisation to dispense fuel if the acquired identification data are present in the database; the system being characterized in that the fuel dispenser comprises first detection means for detecting whether the dispensing organ is present or absent in the housing, in that the electronic head is connected to the first detection means and is configured for signalling to a reservation system of the refuelling station whether the fuel dispenser is available or occupied, and in that the control unit is configured to control the electronic head such that the the electronic head signals that the fuel dispenser is available when the dispensing organ engages the mouth and the control unit is awaiting said authorisation. the dispensing organ, and an electronic head; the system further comprising second detection means for detecting whether the dispensing organ engages or disengages the mouth; memory means, which are associated with the tank, and in particular are mountable on the vehicle, and which are configured to store identification data of the tank, and in particular of the vehicle; a data acquisition system configured for acquiring the engagement/disengagement status of the dispensing organ in/from the mouth and for acquiring the identification data when the second detection means detect that the dispensing organ engages the mouth; a database of identification data of a plurality of authorised tanks; and a control unit, which is configured to query the database such that it receives an authorisation to dispense fuel if the acquired identification data are present in the database; the system being characterized in that the fuel dispenser comprises first detection means for detecting whether the dispensing organ is present or absent in the housing, in that the electronic head is connected to the first detection means and is configured for signalling to a reservation system of the refuelling station whether the fuel dispenser is available or occupied, and in that the control unit is configured to control the electronic head such that the the electronic head signals that the fuel dispenser is available when the dispensing organ engages the mouth and the control unit is awaiting said authorisation.